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attention step essay “I want to tell you about the time I almost died.” I really don’t have such a tale to tell, but I bet I piqued your interest, didn’t I? Why? Because it’s a great opening line that makes you want to essay learn more. The Gum Benzoin Tree? You keep reading because you want to know how the story ends. This line is actually the first line of the essay literature movie Fallen (1998), and whether or not you like the movie, you have to admit that the opening line is killer. The Gum Benzoin Tree? A killer opening line and catchy introduction are exactly what you want for your essay. You want to write an essay introduction that says, “ READ ME! ” To learn how to literature write an Tree, essay introduction in literature 3 easy steps, keep reading! First impressions are important! Think about how many times you start reading an phrase, article and don’t read more than a line or two because you lose interest just that fast.
Readers are going to approach your paper in the same way. If they aren’t interested in the first few lines, they’ll stop reading. (Of course, your professor will keep reading even if she’s not very interested, but that’s not the reaction you’re hoping for.) Without a good introduction, your paper will fall flat. Like anything it takes a bit of time and practice to literature craft the perfect introduction, but it’s worth it! So let’s talk about how to write an essay introduction in and their 3 easy steps. How to Write an Essay Introduction in 3 Easy Steps. Step 1: Write a catchy opening line. What do all good essay introductions have in common? They have memorable opening lines. These opening lines (sometimes called hook sentences) grab readers’ attention. They provide just enough information to essay definition leave your audience wanting more.
What your opening line looks like will depend on what type of paper you’re writing. During The Middle Ages, Merchants, Contributed To The? You might try using a shocking quote, an essay, interesting statistic, an anecdote, or a question you’ll answer in the essay. If you’re writing a problem/solution essay, for example, you’ll likely be writing about ages, merchants, and their contributed a serious topic. Your tone and opening lines will reflect this, and definition literature a shocking quote or statistic might be your best option. Here’s a quick example: Bad opening line for a problem/solution essay: Parking on campus is terrible, and Media Opportunities they definitely need to do something about it. This broad, uninteresting statement doesn’t work well as opening line.
The language is too informal, and readers aren’t sure who “they” might be. Better opening line for essay definition, a problem/solution essay: A 2014 Student Government survey revealed that 65% of commuters have been late to class in phrase the past semester due to lack of available on-campus parking. The opening line works much better. Not only is the tone much more serious, but it includes a statistic that reveals that the problem actually exists. If you’re writing an evaluation essay, you’ll likely be writing in first person. Because this essay is more informal, you have more options for essay, an opening line. You might use a personal story or anecdote, but might also find that a quote works just as well.
Let’s look at a few sample opening lines from an evaluation essay. Bad opening line #1: I think Michael Keaton was a good Batman. The most appropriate reaction to this line would be: So what? This opening line tells readers almost nothing. It isn’t interesting and doesn’t grab readers’ attention at all. Bad opening line #2: According to dictionary.com, Batman is “a character in an American comic strip and several films who secretly assumes a batlike costume in order to fight crime”. This is a horrible opening line! Don’t use dictionary definitions to start your paper. Dictionary definitions are dull and boring, and in most cases, readers already know the word you’re defining, so the greek strategy isn’t effective. Bad opening line #3: Ever since the days of the cavemen, we’ve told stories about our heroes. Essay? This type of introduction makes a broad, sweeping statement that doesn’t offer any connection to the real content of your paper.
Avoid such statements that start with the beginning of the bull calf, time. Better opening line: Even though Christopher Nolan’s Batman has been critically acclaimed, the fact remains that the essay literature most successful Batman ever made was Tim Burton’s version starring Michael Keaton ( Aspen ). This opening line cites a credible source and offers readers an greek hades, arguable statement. This type of statement will work well if readers are fans of essay definition literature, Keaton or if readers are fans of Nolan, as they’ll want to read on to see why you think Keaton is greek hades so much better. Think about what readers need to know to understand the focus of your paper. Think about how narrow or how broad your introduction should be and what you’ll include in your opening paragraph to help readers understand what you’re writing about. If you’re writing an evaluation essay about Michael Keaton’s portrayal of Batman, including details about the entire Batman franchise is too broad. Essay Definition Literature? Instead, focus your introduction more closely on only Michael Keaton’s interpretation of Essay Social Media Marketing, Batman. Here’s an example. Definition? Bad strategy to introduce the topic: Batman debuted in comic books in 1939 and has been popular ever since. Traditions? Batman was a television show in the 1960’s and was also remade into many feature-length movies. These movies include Batman Robin, Batman, Batman Returns, Batman Forever, and essay definition The Dark Knight Trilogy.
This example discusses the history of phrase modifiers, Batman and lists various movies, but the focus is broad, and essay definition literature it doesn’t even mention Michael Keaton. Remember, you’re writing an evaluation essay about Michael Keaton, so he should probably be mentioned in the introduction! Better strategy to introduce the topic: Since Batman’s comic book debut in 1939, Batman has been portrayed in the 1960’s hit television show (starring Adam West) and in a number of feature-length movies, with A-list actors such as Michael Keaton, George Clooney, and Christian Bale starring in the lead role. Though all of these actors brought their own unique style to the caped crusader, Michael Keaton’s performance stands out among the others. This example still includes an overview of the history, but it focuses on the men who starred as Batman. This strategy narrows the focus of The Gum Benzoin Essay, your introduction and tells readers that you’ll be focusing on Michael Keaton, rather than the essay definition literature history of the bull calf, Batman or the other actors. Step 3: Write a clear, focused thesis statement. A thesis statement is definition essentially a mini-outline of your paper. The Bull Calf? It tells readers what your paper is literature about and offers your opinion on the topic. Without a strong thesis, your essay introduction pretty much falls apart. During Merchants, Artisans, Guilds To The? It’s like putting together a TV stand but deciding to not use all 500 tiny screws in the plastic bag.
Without all of those screws in place, the essay definition stand will fall apart once you put your TV on it. So take the Tree time to write a focused thesis. It will help hold your paper together. Check out this example. Bad thesis statement: In this paper, I’ll prove that Michael Keaton is the best Batman. There are so many things wrong with this thesis that I don’t even know where to definition start. Ancient Wedding? First, in most types of writing there’s really no need to announce statements like, “In this paper…” Readers should understand the thesis without such announcements.
Second, your essay won’t “prove” the essay definition Michael Keaton is the best, so avoid such absolute wording. Finally, the the bull calf thesis is vague. How will you define “best”? What does it mean to essay definition literature be the greek hades “best” Batman? A thesis needs to be far more specific. Better thesis statement: Michael Keaton’s comedic timing, on-screen presence, and ability to deliver flawless lines makes Keaton’s version of Batman one of the most effective on-screen portrayals of the character to essay literature date. This thesis statement is much better because it gives readers a quick overview of the paper. It also tells readers that you’re writing about greek hades Michael Keaton’s portrayal of Batman, and you’re evaluating Keaton on three specific criteria. It’s strong enough to stand on its own and strong enough to hold your paper together.
Here’s what your completed essay introduction looks like. Even though Christopher Nolan’s Batman has been critically acclaimed, the fact remains that the most successful Batman ever made was Tim Burton’s version starring Michael Keaton (Aspen). Since Batman’s comic book debut in 1939, Batman has been portrayed in the 1960s hit television show (starring Adam West) and in essay a number of the bull calf, feature-length movies, with A-list actors such as Michael Keaton, George Clooney, and essay literature Christian Bale starring in the lead role. Though all of these actors brought their own unique style to the caped crusader, Michael Keaton’s performance stands out among the others. Michael Keaton’s comedic timing, on-screen presence, and ability to Benzoin Tree deliver flawless lines makes Keaton’s version of Batman one of the most effective on-screen portrayals of the character to date. Not bad, is it?
It hooks readers with a catchy opening line, provides a brief introduction to your topic, and includes a strong, focused thesis to let readers know what your paper is about. Essay Definition? Write the Introduction Last (and Other Crazy Ideas) Even though the introduction is the first thing your audience reads, the introduction doesn’t have to be the first thing you write. Greek Hades? You should always start with a solid focus for your paper, but you can start writing the literature body of your paper first. Sometimes it can be easier to think of a clever line and strong thesis once you’ve written the greek hades main arguments of your paper. You might also try writing the body and conclusion of your paper (minus the introduction). Once you’ve written the conclusion, think about essay how you might rework your concluding ideas into an amazing introduction. Yes, this means you’ll need to write a second conclusion, but sometimes revised conclusions make the best introductions!
If you’re one of those procrastinators and need a bit of help actually starting your paper, read How to during the middle ages, artisans, and their contributed Write an essay literature, Essay Fast and Well. You might also want to read this to help with formatting. If you’re still not sure if you know how to write an essay introduction that works, why not have one of our Kibin editors take a look at your paper? Psst. 98% of Kibin users report better grades! Get inspiration from over the bull calf, 500,000 example essays.
About the literature Author. Susan M. Greek Hades? Inez is a professor of English and essay writing goddess based out of the Northeast. This is phrase modifiers very good and essay literature very helpful. I#8217;m glad you think so, Antonius #128578; Thanks for reading!
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4 The Application Program Interface. This section describes the essay definition literature, C API for Lua, that is, the set of C functions available to greek hades, the host program to communicate with Lua. All API functions and related types and constants are declared in the header file lua.h . Even when we use the term function, any facility in essay definition, the API may be provided as a macro instead. Except where stated otherwise, all such macros use each of their arguments exactly once (except for the first argument, which is always a Lua state), and so do not generate any hidden side-effects. As in most C libraries, the Lua API functions do not check their arguments for validity or consistency. The Bull Calf? However, you can change this behavior by compiling Lua with the macro LUA_USE_APICHECK defined. Lua uses a virtual stack to pass values to essay definition, and from phrase C. Each element in this stack represents a Lua value ( nil , number, string, etc.). Whenever Lua calls C, the called function gets a new stack, which is literature, independent of modifiers, previous stacks and of stacks of C functions that are still active. This stack initially contains any arguments to the C function and essay definition, it is where the C function pushes its results to be returned to the caller (see lua_CFunction ). For convenience, most query operations in the API do not follow a strict stack discipline.
Instead, they can refer to any element in the stack by using an ancient wedding index : A positive index represents an absolute stack position (starting at essay literature 1); a negative index represents an offset relative to the top of the stack. More specifically, if the stack has n elements, then index 1 represents the first element (that is, the element that was pushed onto the stack first) and greek hades, index n represents the essay literature, last element; index -1 also represents the last element (that is, the element at the top) and index -n represents the first element. When you interact with the Lua API, you are responsible for phrase, ensuring consistency. In particular, you are responsible for controlling stack overflow . You can use the function lua_checkstack to essay definition, ensure that the stack has extra slots when pushing new elements. Whenever Lua calls C, it ensures that the The Gum, stack has at least LUA_MINSTACK extra slots. LUA_MINSTACK is definition, defined as 20, so that usually you do not have to worry about ancient greek wedding stack space unless your code has loops pushing elements onto the stack. When you call a Lua function without a fixed number of results (see lua_call ), Lua ensures that the stack has enough size for all results, but it does not ensure any extra space. So, before pushing anything in the stack after such a call you should use lua_checkstack . Any function in essay definition literature, the API that receives stack indices works only with valid indices or acceptable indices . A valid index is an index that refers to the bull calf, a real position within the stack, that is, its position lies between 1 and the stack top ( 1 ≤ abs(index) ≤ top ). Usually, functions that can modify the value at an index require valid indices. Unless otherwise noted, any function that accepts valid indices also accepts pseudo-indices , which represent some Lua values that are accessible to definition, C code but which are not in the stack.
Pseudo-indices are used to greek hades, access the registry and the upvalues of definition, a C function (see §4.4). Functions that do not need a specific stack position, but only a value in the stack (e.g., query functions), can be called with acceptable indices. Traditions? An acceptable index can be any valid index, including the pseudo-indices, but it also can be any positive index after the stack top within the space allocated for the stack, that is, indices up to essay definition literature, the stack size. (Note that 0 is never an acceptable index.) Except when noted otherwise, functions in the API work with acceptable indices. Acceptable indices serve to avoid extra tests against the stack top when querying the stack. For instance, a C function can query its third argument without the need to first check whether there is a third argument, that is, without the need to check whether 3 is a valid index.
For functions that can be called with acceptable indices, any non-valid index is treated as if it contains a value of a virtual type LUA_TNONE , which behaves like a nil value. When a C function is created, it is possible to Essay Opportunities, associate some values with it, thus creating a C closure (see lua_pushcclosure ); these values are called upvalues and essay literature, are accessible to the function whenever it is called. Whenever a C function is called, its upvalues are located at specific pseudo-indices. The Gum Benzoin Essay? These pseudo-indices are produced by the macro lua_upvalueindex . The first value associated with a function is at position lua_upvalueindex(1) , and so on. Any access to lua_upvalueindex( n ) , where n is greater than the essay definition literature, number of upvalues of the current function (but not greater than 256), produces an phrase modifiers acceptable but invalid index. Lua provides a registry , a predefined table that can be used by any C code to store whatever Lua values it needs to store. The registry table is always located at pseudo-index LUA_REGISTRYINDEX , which is a valid index. Essay? Any C library can store data into this table, but it should take care to choose keys that are different from those used by other libraries, to avoid collisions. Typically, you should use as key a string containing your library name, or a light userdata with the the bull calf, address of literature, a C object in your code, or any Lua object created by your code. As with global names, string keys starting with an underscore followed by uppercase letters are reserved for Lua. The integer keys in the registry are used by the reference mechanism, implemented by the auxiliary library, and by some predefined values.
Therefore, integer keys should not be used for other purposes. When you create a new Lua state, its registry comes with some predefined values. These predefined values are indexed with integer keys defined as constants in greek hades, lua.h . The following constants are defined: LUA_RIDX_MAINTHREAD : At this index the registry has the definition literature, main thread of the state. (The main thread is the modifiers, one created together with the state.) LUA_RIDX_GLOBALS : At this index the registry has the global environment. Internally, Lua uses the C longjmp facility to handle errors. (You can also choose to use exceptions if you compile Lua as C++; search for LUAI_THROW in the source code.) When Lua faces any error (such as a memory allocation error, type errors, syntax errors, and runtime errors) it raises an error; that is, it does a long jump. A protected environment uses setjmp to definition literature, set a recovery point; any error jumps to greek hades, the most recent active recovery point. If an essay literature error happens outside any protected environment, Lua calls a panic function (see lua_atpanic ) and ancient greek traditions, then calls abort , thus exiting the host application.
Your panic function can avoid this exit by never returning (e.g., doing a long jump to literature, your own recovery point outside Lua). The panic function runs as if it were a message handler (see §2.3); in particular, the error message is at the top of the greek hades, stack. Essay Definition? However, there is no guarantees about stack space. To push anything on the stack, the panic function should first check the available space (see §4.2). Most functions in the API can throw an error, for instance due to a memory allocation error. The documentation for each function indicates whether it can throw errors. Inside a C function you can throw an error by calling lua_error . Internally, Lua uses the C longjmp facility to yield a coroutine. Therefore, if a function foo calls an API function and this API function yields (directly or indirectly by calling another function that yields), Lua cannot return to foo any more, because the longjmp removes its frame from the C stack.
To avoid this kind of problem, Lua raises an error whenever it tries to yield across an API call, except for three functions: lua_yieldk , lua_callk , and lua_pcallk . All those functions receive a continuation function (as a parameter called k ) to continue execution after a yield. We need to set some terminology to explain continuations. We have a C function called from Lua which we will call the original function . This original function then calls one of those three functions in the C API, which we will call the callee function , that then yields the during the middle ages, merchants, contributed, current thread. (This can happen when the callee function is lua_yieldk , or when the callee function is either lua_callk or lua_pcallk and the function called by them yields.) Suppose the running thread yields while executing the essay definition, callee function. After the thread resumes, it eventually will finish running the callee function. However, the callee function cannot return to Benzoin Tree Essay, the original function, because its frame in essay, the C stack was destroyed by the yield. Instead, Lua calls a continuation function , which was given as an argument to the callee function. The Bull Calf? As the name implies, the continuation function should continue the task of the original function. Lua treats the continuation function as if it were the original function. Essay Definition? The continuation function receives the same Lua stack from the original function, in the same state it would be if the callee function had returned. (For instance, after a lua_callk the function and its arguments are removed from the stack and during artisans, and their guilds to the, replaced by the results from the call.) It also has the same upvalues.
Whatever it returns is handled by Lua as if it were the return of the original function. The only difference in the Lua state between the original function and its continuation is the literature, result of during the middle artisans, and their guilds to the, a call to lua_getctx . Here we list all functions and types from the C API in alphabetical order. Each function has an indicator like this: [-o, +p, x ] The first field, o , is how many elements the function pops from the stack. The second field, p , is definition, how many elements the function pushes onto the stack. (Any function always pushes its results after popping its arguments.) A field in greek hades, the form x|y means the function can push (or pop) x or y elements, depending on the situation; an interrogation mark ' ? ' means that we cannot know how many elements the essay definition literature, function pops/pushes by looking only at its arguments (e.g., they may depend on about Social Media Marketing Opportunities, what is on the stack). The third field, x , tells whether the function may throw errors: ' - ' means the function never throws any error; ' e ' means the function may throw errors; ' v ' means the function may throw an error on purpose.
Converts the acceptable index idx into an absolute index (that is, one that does not depend on the stack top). The type of the memory-allocation function used by Lua states. The allocator function must provide a functionality similar to realloc , but not exactly the same. Its arguments are ud , an opaque pointer passed to lua_newstate ; ptr , a pointer to the block being allocated/reallocated/freed; osize , the original size of the block or some code about what is being allocated; nsize , the definition literature, new size of the the bull calf, block. When ptr is not NULL , osize is the size of the block pointed by ptr , that is, the size given when it was allocated or reallocated.
When ptr is essay definition literature, NULL , osize encodes the kind of object that Lua is allocating. osize is greek hades, any of LUA_TSTRING , LUA_TTABLE , LUA_TFUNCTION , LUA_TUSERDATA , or LUA_TTHREAD when (and only when) Lua is creating a new object of that type. When osize is definition, some other value, Lua is allocating memory for something else. Lua assumes the following behavior from the allocator function: When nsize is zero, the allocator should behave like free and greek hades, return NULL . When nsize is not zero, the allocator should behave like realloc . The allocator returns NULL if and only if it cannot fulfill the request. Lua assumes that the allocator never fails when osize = nsize . Here is a simple implementation for the allocator function. It is used in the auxiliary library by luaL_newstate . Note that Standard C ensures that free(NULL) has no effect and that realloc(NULL, size) is equivalent to malloc(size) . This code assumes that realloc does not fail when shrinking a block. Essay Definition Literature? (Although Standard C does not ensure this behavior, it seems to be a safe assumption.) Performs an arithmetic operation over the two values (or one, in Benzoin, the case of negation) at the top of the stack, with the value at the top being the second operand, pops these values, and pushes the result of the operation. The function follows the semantics of the corresponding Lua operator (that is, it may call metamethods). The value of op must be one of the following constants: LUA_OPADD : performs addition ( + ) LUA_OPSUB : performs subtraction ( - ) LUA_OPMUL : performs multiplication ( * ) LUA_OPDIV : performs division ( / ) LUA_OPMOD : performs modulo ( % ) LUA_OPPOW : performs exponentiation ( ^ ) LUA_OPUNM : performs mathematical negation (unary - ) Sets a new panic function and returns the essay definition literature, old one (see §4.6). Calls a function.
To call a function you must use the following protocol: first, the Tree, function to essay, be called is pushed onto the stack; then, the arguments to the function are pushed in direct order; that is, the first argument is pushed first. Finally you call lua_call ; nargs is the number of modifiers, arguments that you pushed onto the stack. All arguments and the function value are popped from the stack when the definition literature, function is called. The function results are pushed onto the stack when the the bull calf, function returns. The number of definition literature, results is adjusted to nresults , unless nresults is LUA_MULTRET . Ages, Artisans, Guilds? In this case, all results from the definition, function are pushed. Lua takes care that the returned values fit into the stack space. The function results are pushed onto Benzoin Tree, the stack in literature, direct order (the first result is pushed first), so that after the call the greek hades, last result is on the top of the stack.
Any error inside the called function is essay definition literature, propagated upwards (with a longjmp ). The following example shows how the host program can do the equivalent to this Lua code: Here it is in C: Note that the code above is balanced: at its end, the the middle ages, merchants, artisans, guilds contributed to the, stack is back to its original configuration. This is considered good programming practice. This function behaves exactly like lua_call , but allows the called function to yield (see §4.7).
Type for C functions. In order to communicate properly with Lua, a C function must use the following protocol, which defines the way parameters and results are passed: a C function receives its arguments from Lua in its stack in direct order (the first argument is pushed first). So, when the function starts, lua_gettop(L) returns the number of arguments received by the function. The first argument (if any) is at index 1 and its last argument is at essay definition index lua_gettop(L) . To return values to the middle artisans, and their guilds, Lua, a C function just pushes them onto essay, the stack, in direct order (the first result is pushed first), and returns the number of results. Any other value in the stack below the results will be properly discarded by Lua. Benzoin Essay? Like a Lua function, a C function called by definition literature Lua can also return many results. As an example, the following function receives a variable number of numerical arguments and returns their average and sum: Ensures that there are at least extra free stack slots in the stack. It returns false if it cannot fulfill the request, because it would cause the stack to be larger than a fixed maximum size (typically at least a few thousand elements) or because it cannot allocate memory for the new stack size. This function never shrinks the stack; if the stack is already larger than the new size, it is left unchanged. Destroys all objects in the given Lua state (calling the corresponding garbage-collection metamethods, if any) and frees all dynamic memory used by this state.
On several platforms, you may not need to modifiers, call this function, because all resources are naturally released when the host program ends. On the other hand, long-running programs that create multiple states, such as daemons or web servers, might need to close states as soon as they are not needed. Compares two Lua values. Returns 1 if the value at index index1 satisfies op when compared with the value at index index2 , following the essay definition literature, semantics of the corresponding Lua operator (that is, it may call metamethods). Otherwise returns 0. Greek Hades? Also returns 0 if any of the essay, indices is non valid. The value of op must be one of the greek hades, following constants: LUA_OPEQ : compares for definition literature, equality ( == ) LUA_OPLT : compares for less than ( ) LUA_OPLE : compares for the bull calf, less or equal ( = ) Concatenates the n values at the top of the essay, stack, pops them, and leaves the result at the top. If n is 1, the result is the single value on the stack (that is, the function does nothing); if n is 0, the result is the empty string. Essay Social Media Opportunities? Concatenation is performed following the usual semantics of Lua (see §3.4.5). Moves the element at essay definition literature index fromidx into the valid index toidx without shifting any element (therefore replacing the value at that position). Creates a new empty table and pushes it onto the stack. Parameter narr is a hint for how many elements the table will have as a sequence; parameter nrec is a hint for how many other elements the phrase modifiers, table will have.
Lua may use these hints to preallocate memory for definition, the new table. This pre-allocation is Tree Essay, useful for performance when you know in advance how many elements the table will have. Otherwise you can use the essay, function lua_newtable . Dumps a function as a binary chunk. Receives a Lua function on the top of the stack and produces a binary chunk that, if loaded again, results in a function equivalent to the one dumped. As it produces parts of the chunk, lua_dump calls function writer (see lua_Writer ) with the given data to write them. The value returned is the error code returned by the last call to the writer; 0 means no errors. This function does not pop the Benzoin Essay, Lua function from the stack. Generates a Lua error.
The error message (which can actually be a Lua value of any type) must be on the stack top. This function does a long jump, and therefore never returns (see luaL_error ). Controls the garbage collector. This function performs several tasks, according to definition literature, the value of the parameter what : LUA_GCSTOP : stops the garbage collector. LUA_GCRESTART : restarts the garbage collector. LUA_GCCOLLECT : performs a full garbage-collection cycle. LUA_GCCOUNT : returns the current amount of memory (in Kbytes) in Benzoin, use by Lua. Essay Definition Literature? LUA_GCCOUNTB : returns the remainder of dividing the current amount of bytes of memory in use by Lua by 1024. LUA_GCSTEP : performs an greek hades incremental step of garbage collection.
The step size is controlled by essay definition data (larger values mean more steps) in a non-specified way. Ancient Greek Wedding Traditions? If you want to control the step size you must experimentally tune the value of data . The function returns 1 if the step finished a garbage-collection cycle. LUA_GCSETPAUSE : sets data as the new value for the pause of the collector (see §2.5). The function returns the essay literature, previous value of the pause. LUA_GCSETSTEPMUL : sets data as the new value for the step multiplier of the collector (see §2.5). The function returns the previous value of the the bull calf, step multiplier. LUA_GCISRUNNING : returns a boolean that tells whether the collector is essay, running (i.e., not stopped). LUA_GCGEN : changes the collector to generational mode (see §2.5). LUA_GCINC : changes the collector to incremental mode.
This is the default mode. For more details about these options, see collectgarbage . Returns the memory-allocation function of a given state. Essay Social Media? If ud is essay literature, not NULL , Lua stores in the bull calf, *ud the opaque pointer passed to literature, lua_newstate . This function is called by a continuation function (see §4.7) to retrieve the Essay Media Marketing, status of the thread and a context information. When called in literature, the original function, lua_getctx always returns LUA_OK and does not change the value of greek hades, its argument ctx . When called inside a continuation function, lua_getctx returns LUA_YIELD and sets the value of essay literature, ctx to the bull calf, be the context information (the value passed as the definition literature, ctx argument to the callee together with the continuation function). When the callee is the middle artisans, and their guilds contributed to the, lua_pcallk , Lua may also call its continuation function to literature, handle errors during the call. That is, upon phrase an error in the function called by lua_pcallk , Lua may not return to the original function but instead may call the continuation function. Essay Definition Literature? In that case, a call to lua_getctx will return the error code (the value that would be returned by lua_pcallk ); the value of ctx will be set to the context information, as in the case of a yield.
Pushes onto the stack the value t[k] , where t is the the bull calf, value at the given index. As in Lua, this function may trigger a metamethod for definition, the index event (see §2.4). Pushes onto phrase modifiers, the stack the value of the global name . Pushes onto the stack the metatable of the value at the given index. Definition Literature? If the value does not have a metatable, the function returns 0 and pushes nothing on the stack. Pushes onto the stack the value t[k] , where t is the value at the given index and k is the value at the top of the stack. This function pops the key from the modifiers, stack (putting the definition literature, resulting value in about Marketing, its place). As in Lua, this function may trigger a metamethod for the index event (see §2.4). Returns the index of the top element in the stack. Because indices start at 1, this result is literature, equal to the number of ancient greek traditions, elements in the stack (and so 0 means an empty stack). Pushes onto the stack the Lua value associated with the essay, userdata at the given index. This Lua value must be a table or nil . Moves the top element into the given valid index, shifting up the elements above this index to open space.
This function cannot be called with a pseudo-index, because a pseudo-index is not an actual stack position. The type used by the Lua API to represent signed integral values. By default it is a ptrdiff_t , which is usually the largest signed integral type the machine handles comfortably. Returns 1 if the the bull calf, value at definition the given index is phrase modifiers, a boolean, and 0 otherwise. Returns 1 if the value at the given index is a C function, and 0 otherwise. Returns 1 if the value at the given index is a function (either C or Lua), and 0 otherwise. Returns 1 if the value at the given index is a light userdata, and essay literature, 0 otherwise. Returns 1 if the value at the given index is nil , and the bull calf, 0 otherwise. Returns 1 if the given index is not valid, and 0 otherwise. Returns 1 if the essay, given index is not valid or if the value at about Social Opportunities this index is nil , and 0 otherwise. Returns 1 if the value at the given index is a number or a string convertible to a number, and 0 otherwise.
Returns 1 if the value at the given index is essay definition literature, a string or a number (which is always convertible to a string), and Essay Social, 0 otherwise. Returns 1 if the literature, value at the given index is a table, and 0 otherwise. Returns 1 if the value at the given index is a thread, and phrase modifiers, 0 otherwise. Returns 1 if the value at the given index is a userdata (either full or light), and 0 otherwise. Returns the length of the value at the given index; it is equivalent to the ' # ' operator in Lua (see §3.4.6). The result is pushed on the stack. Loads a Lua chunk (without running it). Definition Literature? If there are no errors, lua_load pushes the compiled chunk as a Lua function on top of the stack.
Otherwise, it pushes an error message. The return values of Benzoin Tree Essay, lua_load are: LUA_OK : no errors; LUA_ERRSYNTAX : syntax error during precompilation; LUA_ERRMEM : memory allocation error; LUA_ERRGCMM : error while running a __gc metamethod. (This error has no relation with the chunk being loaded. It is generated by the garbage collector.) The lua_load function uses a user-supplied reader function to read the chunk (see lua_Reader ). The data argument is an opaque value passed to the reader function. The source argument gives a name to the chunk, which is used for error messages and in debug information (see §4.9). lua_load automatically detects whether the essay definition literature, chunk is text or binary and loads it accordingly (see program luac ). Greek Hades? The string mode works as in function load , with the addition that a NULL value is equivalent to the string bt . lua_load uses the stack internally, so the reader function should always leave the stack unmodified when returning. If the resulting function has one upvalue, this upvalue is essay definition, set to the value of the global environment stored at index LUA_RIDX_GLOBALS in the registry (see §4.5). When loading main chunks, this upvalue will be the _ENV variable (see §2.2). Creates a new thread running in a new, independent state.
Returns NULL if cannot create the greek hades, thread or the state (due to lack of memory). The argument f is the allocator function; Lua does all memory allocation for this state through this function. The second argument, ud , is an opaque pointer that Lua passes to definition literature, the allocator in during the middle artisans, to the, every call. Creates a new empty table and definition, pushes it onto phrase, the stack. It is equivalent to lua_createtable(L, 0, 0) . Creates a new thread, pushes it on the stack, and returns a pointer to essay, a lua_State that represents this new thread. The new thread returned by this function shares with the original thread its global environment, but has an independent execution stack. There is no explicit function to close or to greek hades, destroy a thread. Threads are subject to essay, garbage collection, like any Lua object.
This function allocates a new block of memory with the given size, pushes onto phrase modifiers, the stack a new full userdata with the block address, and returns this address. The host program can freely use this memory. Pops a key from the stack, and pushes a keyvalue pair from the essay literature, table at the given index (the next pair after the given key). If there are no more elements in the table, then lua_next returns 0 (and pushes nothing). A typical traversal looks like this: While traversing a table, do not call lua_tolstring directly on a key, unless you know that the key is actually a string. Recall that lua_tolstring may change the value at the given index; this confuses the next call to lua_next . See function next for Benzoin, the caveats of modifying the literature, table during its traversal.
The type of numbers in Lua. By default, it is double, but that can be changed in ancient, luaconf.h . Through this configuration file you can change Lua to literature, operate with another type for Essay about Social Media, numbers (e.g., float or long). Calls a function in protected mode. Both nargs and nresults have the definition, same meaning as in lua_call . If there are no errors during the call, lua_pcall behaves exactly like lua_call . However, if there is any error, lua_pcall catches it, pushes a single value on the stack (the error message), and returns an error code. Like lua_call , lua_pcall always removes the function and its arguments from the stack. If msgh is 0, then the error message returned on the stack is Marketing Opportunities, exactly the original error message. Otherwise, msgh is the stack index of a message handler . (In the current implementation, this index cannot be a pseudo-index.) In case of runtime errors, this function will be called with the error message and essay definition, its return value will be the message returned on the stack by lua_pcall . Typically, the message handler is used to add more debug information to the error message, such as a stack traceback. Such information cannot be gathered after the return of lua_pcall , since by then the stack has unwound. The lua_pcall function returns one of the following codes (defined in lua.h ): LUA_OK (0): success. Traditions? LUA_ERRRUN : a runtime error. LUA_ERRMEM : memory allocation error.
For such errors, Lua does not call the message handler. LUA_ERRERR : error while running the message handler. LUA_ERRGCMM : error while running a __gc metamethod. (This error typically has no relation with the function being called. It is generated by the garbage collector.) This function behaves exactly like lua_pcall , but allows the called function to literature, yield (see §4.7). Pops n elements from the stack. Pushes a boolean value with value b onto the stack. Pushes a new C closure onto the stack. When a C function is created, it is possible to associate some values with it, thus creating a C closure (see §4.4); these values are then accessible to the function whenever it is called.
To associate values with a C function, first these values should be pushed onto the stack (when there are multiple values, the first value is pushed first). Then lua_pushcclosure is called to create and push the C function onto the bull calf, the stack, with the argument n telling how many values should be associated with the function. lua_pushcclosure also pops these values from the stack. The maximum value for n is definition, 255. When n is phrase, zero, this function creates a light C function , which is just a pointer to the C function. In that case, it never throws a memory error.
Pushes a C function onto the stack. This function receives a pointer to a C function and essay literature, pushes onto about Social Marketing, the stack a Lua value of type function that, when called, invokes the corresponding C function. Any function to literature, be registered in Lua must follow the correct protocol to receive its parameters and return its results (see lua_CFunction ). lua_pushcfunction is defined as a macro: Note that f is used twice. Pushes onto the stack a formatted string and returns a pointer to this string. It is similar to the ISO C function sprintf , but has some important differences: You do not have to allocate space for ancient, the result: the result is a Lua string and definition, Lua takes care of memory allocation (and deallocation, through garbage collection).
The conversion specifiers are quite restricted. Greek? There are no flags, widths, or precisions. The conversion specifiers can only be ' %% ' (inserts a ' % ' in the string), ' %s ' (inserts a zero-terminated string, with no size restrictions), ' %f ' (inserts a lua_Number ), ' %p ' (inserts a pointer as a hexadecimal numeral), ' %d ' (inserts an essay int ), and ' %c ' (inserts an about Social Media int as a byte). Pushes the global environment onto the stack. Pushes a number with value n onto the stack. Pushes a light userdata onto the stack. Userdata represent C values in Lua. A light userdata represents a pointer, a void* . It is essay literature, a value (like a number): you do not create it, it has no individual metatable, and it is not collected (as it was never created). The Bull Calf? A light userdata is equal to any light userdata with the same C address. This macro is equivalent to lua_pushlstring , but can be used only essay definition when s is a literal string.
It automatically provides the Essay Marketing, string length. Pushes the string pointed to definition, by s with size len onto the stack. Lua makes (or reuses) an internal copy of the given string, so the memory at s can be freed or reused immediately after the function returns. The string can contain any binary data, including embedded zeros. Returns a pointer to the internal copy of the string. Pushes a nil value onto modifiers, the stack. Pushes a number with value n onto the stack.
Pushes the zero-terminated string pointed to by s onto the stack. Lua makes (or reuses) an internal copy of the given string, so the memory at s can be freed or reused immediately after the function returns. Returns a pointer to the internal copy of the string. If s is NULL , pushes nil and returns NULL . Pushes the thread represented by L onto the stack. Returns 1 if this thread is the definition, main thread of its state. Pushes a number with value n onto the stack. Pushes a copy of the element at the given index onto the stack. Equivalent to modifiers, lua_pushfstring , except that it receives a va_list instead of a variable number of essay definition literature, arguments.
Returns 1 if the the bull calf, two values in indices index1 and index2 are primitively equal (that is, without calling metamethods). Otherwise returns 0. Also returns 0 if any of the indices are non valid. Similar to lua_gettable , but does a raw access (i.e., without metamethods). Pushes onto the stack the essay, value t[n] , where t is the table at Essay about Media Marketing the given index. Definition? The access is raw; that is, it does not invoke metamethods. Pushes onto the stack the value t[k] , where t is the table at the given index and k is the greek wedding traditions, pointer p represented as a light userdata. The access is raw; that is, it does not invoke metamethods. Returns the raw length of the value at essay literature the given index: for strings, this is the string length; for tables, this is the result of the modifiers, length operator (' # ') with no metamethods; for userdata, this is the size of the block of memory allocated for the userdata; for essay definition, other values, it is 0. Similar to lua_settable , but does a raw assignment (i.e., without metamethods). Does the equivalent of t[n] = v , where t is the table at the given index and v is the value at the middle the top of the stack. This function pops the value from the essay literature, stack.
The assignment is raw; that is, it does not invoke metamethods. Does the equivalent of t[k] = v , where t is the table at Essay Marketing Opportunities the given index, k is the pointer p represented as a light userdata, and v is the value at the top of the stack. This function pops the value from the stack. The assignment is raw; that is, it does not invoke metamethods. The reader function used by lua_load . Definition Literature? Every time it needs another piece of the chunk, lua_load calls the reader, passing along its data parameter. The reader must return a pointer to a block of memory with a new piece of the chunk and set size to greek hades, the block size. The block must exist until the reader function is called again.
To signal the end of the chunk, the reader must return NULL or set size to zero. The reader function may return pieces of any size greater than zero. Sets the essay, C function f as the new value of global name . It is the bull calf, defined as a macro: Removes the element at the given valid index, shifting down the elements above this index to definition literature, fill the gap. Traditions? This function cannot be called with a pseudo-index, because a pseudo-index is essay, not an actual stack position.
Moves the top element into the given valid index without shifting any element (therefore replacing the value at the given index), and then pops the top element. Starts and resumes a coroutine in a given thread. To start a coroutine, you push onto the thread stack the main function plus any arguments; then you call lua_resume , with nargs being the number of arguments. This call returns when the Tree Essay, coroutine suspends or finishes its execution. When it returns, the definition, stack contains all values passed to modifiers, lua_yield , or all values returned by the body function. lua_resume returns LUA_YIELD if the coroutine yields, LUA_OK if the definition, coroutine finishes its execution without errors, or an error code in case of The Gum Tree, errors (see lua_pcall ). In case of errors, the stack is not unwound, so you can use the debug API over essay, it. Greek Hades? The error message is on the top of the stack. To resume a coroutine, you remove any results from the last lua_yield , put on its stack only the values to be passed as results from yield , and then call lua_resume . The parameter from represents the definition, coroutine that is resuming L . Greek? If there is no such coroutine, this parameter can be NULL . Changes the literature, allocator function of a given state to f with user data ud . Does the equivalent to t[k] = v , where t is the value at the given index and v is the value at the top of the ages, artisans, and their contributed to the, stack. This function pops the value from the stack. As in Lua, this function may trigger a metamethod for the newindex event (see §2.4).
Pops a value from the stack and sets it as the new value of essay, global name . Pops a table from the stack and about Social Media Marketing, sets it as the new metatable for the value at essay definition the given index. Does the equivalent to the bull calf, t[k] = v , where t is the value at the given index, v is the essay definition literature, value at the top of the stack, and k is the value just below the top. This function pops both the during ages, merchants, artisans, contributed to the, key and the value from the essay definition, stack. As in greek hades, Lua, this function may trigger a metamethod for the newindex event (see §2.4). Accepts any index, or 0, and sets the essay literature, stack top to this index. If the new top is larger than the old one, then the new elements are filled with nil . If index is 0, then all stack elements are removed. Pops a table or nil from the stack and sets it as the new value associated to modifiers, the userdata at the given index. An opaque structure that points to a thread and indirectly (through the thread) to the whole state of a Lua interpreter. The Lua library is fully reentrant: it has no global variables.
All information about a state is accessible through this structure. A pointer to this structure must be passed as the first argument to every function in definition, the library, except to phrase modifiers, lua_newstate , which creates a Lua state from scratch. Returns the status of the thread L . The status can be 0 ( LUA_OK ) for a normal thread, an error code if the thread finished the execution of a lua_resume with an error, or LUA_YIELD if the essay literature, thread is suspended. You can only call functions in the bull calf, threads with status LUA_OK . You can resume threads with status LUA_OK (to start a new coroutine) or LUA_YIELD (to resume a coroutine). Converts the Lua value at the given index to a C boolean value (0 or 1). Like all tests in Lua, lua_toboolean returns true for any Lua value different from false and nil ; otherwise it returns false. (If you want to accept only actual boolean values, use lua_isboolean to test the literature, value's type.) Converts a value at the given index to a C function. Phrase? That value must be a C function; otherwise, returns NULL . Equivalent to lua_tointegerx with isnum equal to NULL . Converts the essay definition literature, Lua value at the given index to Tree, the signed integral type lua_Integer . The Lua value must be a number or a string convertible to definition literature, a number (see §3.4.2); otherwise, lua_tointegerx returns 0. If the number is not an integer, it is truncated in greek hades, some non-specified way. If isnum is not NULL , its referent is assigned a boolean value that indicates whether the operation succeeded. Converts the Lua value at definition literature the given index to a C string.
If len is not NULL , it also sets *len with the string length. The Lua value must be a string or a number; otherwise, the function returns NULL . If the value is a number, then lua_tolstring also changes the ancient, actual value in the stack to essay literature, a string . The Bull Calf? (This change confuses lua_next when lua_tolstring is applied to keys during a table traversal.) lua_tolstring returns a fully aligned pointer to a string inside the Lua state. This string always has a zero (' 0 ') after its last character (as in C), but can contain other zeros in its body. Because Lua has garbage collection, there is no guarantee that the pointer returned by lua_tolstring will be valid after the corresponding value is essay definition literature, removed from the stack. Equivalent to lua_tonumberx with isnum equal to NULL . Converts the Lua value at the given index to the C type lua_Number (see lua_Number ). Ancient? The Lua value must be a number or a string convertible to a number (see §3.4.2); otherwise, lua_tonumberx returns 0.
If isnum is essay literature, not NULL , its referent is phrase, assigned a boolean value that indicates whether the essay definition, operation succeeded. Converts the value at the given index to a generic C pointer ( void* ). The value can be a userdata, a table, a thread, or a function; otherwise, lua_topointer returns NULL . Different objects will give different pointers. Ancient Greek Traditions? There is no way to convert the pointer back to its original value. Typically this function is used only for literature, debug information. Equivalent to lua_tolstring with len equal to NULL . Converts the the bull calf, value at the given index to a Lua thread (represented as lua_State* ). Essay Definition? This value must be a thread; otherwise, the function returns NULL . Equivalent to lua_tounsignedx with isnum equal to greek hades, NULL . Converts the essay, Lua value at the given index to the unsigned integral type lua_Unsigned . The Lua value must be a number or a string convertible to a number (see §3.4.2); otherwise, lua_tounsignedx returns 0. If the number is not an integer, it is truncated in some non-specified way. If the about Media Marketing Opportunities, number is outside the range of representable values, it is normalized to essay literature, the remainder of its division by one more than the maximum representable value. If isnum is not NULL , its referent is assigned a boolean value that indicates whether the operation succeeded. If the ages, and their guilds contributed, value at the given index is definition, a full userdata, returns its block address.
If the value is a light userdata, returns its pointer. Otherwise, returns NULL . Returns the ancient greek wedding, type of the essay, value in the bull calf, the given valid index, or LUA_TNONE for essay definition, a non-valid (but acceptable) index. The types returned by the bull calf lua_type are coded by essay the following constants defined in lua.h : LUA_TNIL , LUA_TNUMBER , LUA_TBOOLEAN , LUA_TSTRING , LUA_TTABLE , LUA_TFUNCTION , LUA_TUSERDATA , LUA_TTHREAD , and LUA_TLIGHTUSERDATA . Returns the name of the type encoded by the bull calf the value tp , which must be one the values returned by lua_type . The type used by the Lua API to represent unsigned integral values. It must have at least 32 bits. By default it is an unsigned int or an unsigned long , whichever can hold 32-bit values. Returns the pseudo-index that represents the i -th upvalue of the running function (see §4.4).
Returns the address of the version number stored in the Lua core. When called with a valid lua_State , returns the address of the version used to essay literature, create that state. Greek Hades? When called with NULL , returns the address of the version running the call. The type of the writer function used by lua_dump . Every time it produces another piece of chunk, lua_dump calls the writer, passing along the buffer to be written ( p ), its size ( sz ), and the data parameter supplied to lua_dump . The writer returns an error code: 0 means no errors; any other value means an essay definition literature error and stops lua_dump from calling the writer again. Exchange values between different threads of the same state. This function pops n values from the greek hades, stack from , and pushes them onto the stack to . This function is equivalent to essay literature, lua_yieldk , but it has no continuation (see §4.7). Therefore, when the Social Marketing Opportunities, thread resumes, it returns to the function that called the function calling lua_yield . Yields a coroutine. This function should only be called as the return expression of a C function, as follows: When a C function calls lua_yieldk in that way, the essay, running coroutine suspends its execution, and the call to lua_resume that started this coroutine returns. The parameter nresults is the number of values from the phrase, stack that are passed as results to lua_resume . When the coroutine is resumed again, Lua calls the given continuation function k to continue the execution of the C function that yielded (see §4.7). This continuation function receives the same stack from the previous function, with the results removed and replaced by the arguments passed to lua_resume . Moreover, the continuation function may access the definition, value ctx by calling lua_getctx . Lua has no built-in debugging facilities.
Instead, it offers a special interface by means of functions and hooks . This interface allows the construction of different kinds of debuggers, profilers, and Essay about Social Marketing, other tools that need inside information from the interpreter. A structure used to carry different pieces of information about essay definition a function or an activation record. Greek Hades? lua_getstack fills only the private part of literature, this structure, for later use. To fill the other fields of Tree Essay, lua_Debug with useful information, call lua_getinfo . The fields of lua_Debug have the following meaning: source : the source of the chunk that created the function. If source starts with a ' @ ', it means that the function was defined in a file where the file name follows the ' @ '. If source starts with a ' = ', the remainder of its contents describe the source in a user-dependent manner. Otherwise, the function was defined in a string where source is that string. short_src : a printable version of essay definition, source , to be used in error messages. linedefined : the the bull calf, line number where the definition of the function starts. lastlinedefined : the line number where the definition of the essay definition, function ends. what : the the bull calf, string Lua if the function is a Lua function, C if it is a C function, main if it is the main part of a chunk. currentline : the current line where the given function is executing. When no line information is available, currentline is set to definition literature, -1. name : a reasonable name for the given function. Because functions in Lua are first-class values, they do not have a fixed name: some functions can be the merchants, artisans, to the, value of literature, multiple global variables, while others can be stored only in a table field.
The lua_getinfo function checks how the function was called to find a suitable name. If it cannot find a name, then name is set to NULL . namewhat : explains the name field. The value of namewhat can be global , local , method , field , upvalue , or (the empty string), according to how the function was called. (Lua uses the empty string when no other option seems to apply.) istailcall : true if this function invocation was called by a tail call. In this case, the the bull calf, caller of this level is not in the stack. nups : the number of upvalues of the function. nparams : the number of fixed parameters of the function (always 0 for definition literature, C functions). Phrase? isvararg : true if the function is a vararg function (always true for C functions). Returns the current hook function. Returns the current hook count. Returns the current hook mask. Gets information about a specific function or function invocation. To get information about a function invocation, the parameter ar must be a valid activation record that was filled by a previous call to lua_getstack or given as argument to a hook (see lua_Hook ). To get information about a function you push it onto the stack and start the definition, what string with the character ' '. Wedding Traditions? (In that case, lua_getinfo pops the function from the top of the stack.) For instance, to know in which line a function f was defined, you can write the following code: Each character in the string what selects some fields of the structure ar to be filled or a value to be pushed on the stack: ' n ': fills in the field name and namewhat ; ' S ': fills in the fields source , short_src , linedefined , lastlinedefined , and what ; ' l ': fills in the field currentline ; ' t ': fills in the field istailcall ; ' u ': fills in the fields nups , nparams , and isvararg ; ' f ': pushes onto the stack the function that is running at the given level; ' L ': pushes onto the stack a table whose indices are the numbers of the essay definition, lines that are valid on the function. (A valid line is a line with some associated code, that is, a line where you can put a break point.
Non-valid lines include empty lines and about Media, comments.) This function returns 0 on error (for instance, an invalid option in what ). Gets information about a local variable of a given activation record or a given function. In the first case, the parameter ar must be a valid activation record that was filled by a previous call to lua_getstack or given as argument to a hook (see lua_Hook ). The index n selects which local variable to definition literature, inspect; see debug.getlocal for details about variable indices and names. lua_getlocal pushes the variable's value onto the bull calf, the stack and returns its name.
In the definition literature, second case, ar should be NULL and the function to be inspected must be at the top of the during merchants, artisans, guilds contributed to the, stack. In this case, only parameters of Lua functions are visible (as there is no information about what variables are active) and definition literature, no values are pushed onto the stack. Returns NULL (and pushes nothing) when the index is greater than the number of active local variables. Gets information about the interpreter runtime stack. This function fills parts of a lua_Debug structure with an during the middle ages, and their identification of the activation record of the function executing at a given level.
Level 0 is the current running function, whereas level n+1 is the function that has called level n (except for tail calls, which do not count on the stack). When there are no errors, lua_getstack returns 1; when called with a level greater than the stack depth, it returns 0. Gets information about a closure's upvalue. (For Lua functions, upvalues are the external local variables that the definition literature, function uses, and greek hades, that are consequently included in its closure.) lua_getupvalue gets the literature, index n of an upvalue, pushes the upvalue's value onto phrase modifiers, the stack, and returns its name. funcindex points to the closure in essay definition literature, the stack. (Upvalues have no particular order, as they are active through the whole function. So, they are numbered in an arbitrary order.) Returns NULL (and pushes nothing) when the index is greater than the the bull calf, number of upvalues. For C functions, this function uses the empty string as a name for literature, all upvalues. Type for debugging hook functions. Whenever a hook is called, its ar argument has its field event set to the specific event that triggered the hook. Lua identifies these events with the greek hades, following constants: LUA_HOOKCALL , LUA_HOOKRET , LUA_HOOKTAILCALL , LUA_HOOKLINE , and LUA_HOOKCOUNT . Moreover, for line events, the field currentline is also set. To get the value of any other field in ar , the hook must call lua_getinfo . For call events, event can be LUA_HOOKCALL , the essay definition, normal value, or LUA_HOOKTAILCALL , for a tail call; in this case, there will be no corresponding return event.
While Lua is running a hook, it disables other calls to hooks. Therefore, if a hook calls back Lua to ages, artisans, and their guilds contributed, execute a function or a chunk, this execution occurs without any calls to hooks. Hook functions cannot have continuations, that is, they cannot call lua_yieldk , lua_pcallk , or lua_callk with a non-null k . Hook functions can yield under the following conditions: Only count and line events can yield and they cannot yield any value; to yield a hook function must finish its execution calling lua_yield with nresults equal to zero. Sets the debugging hook function. Argument f is the hook function. mask specifies on essay, which events the hook will be called: it is formed by a bitwise or of the constants LUA_MASKCALL , LUA_MASKRET , LUA_MASKLINE , and the bull calf, LUA_MASKCOUNT . The count argument is essay definition literature, only meaningful when the mask includes LUA_MASKCOUNT . For each event, the hook is called as explained below: The call hook: is called when the interpreter calls a function. The hook is called just after Lua enters the the bull calf, new function, before the definition literature, function gets its arguments. The return hook: is called when the interpreter returns from a function. The hook is called just before Lua leaves the function. There is no standard way to the middle artisans, and their contributed to the, access the values to be returned by the function. The line hook: is called when the interpreter is about to start the essay definition, execution of a new line of code, or when it jumps back in the code (even to during the middle ages, merchants, and their guilds contributed to the, the same line). (This event only happens while Lua is executing a Lua function.) The count hook: is called after the interpreter executes every count instructions. (This event only happens while Lua is executing a Lua function.)
A hook is essay definition, disabled by setting mask to zero. Sets the value of a local variable of a given activation record. Parameters ar and n are as in lua_getlocal (see lua_getlocal ). lua_setlocal assigns the the middle merchants, artisans, to the, value at the top of the stack to the variable and returns its name. It also pops the value from the stack. Returns NULL (and pops nothing) when the index is greater than the number of active local variables. Sets the value of a closure's upvalue. It assigns the value at essay the top of the stack to the upvalue and returns its name. It also pops the value from the stack.
Parameters funcindex and n are as in guilds contributed, the lua_getupvalue (see lua_getupvalue ). Returns NULL (and pops nothing) when the index is greater than the number of upvalues. Returns an unique identifier for essay definition, the upvalue numbered n from the closure at phrase index funcindex . Parameters funcindex and n are as in the lua_getupvalue (see lua_getupvalue ) (but n cannot be greater than the number of definition, upvalues). These unique identifiers allow a program to check whether different closures share upvalues. Lua closures that share an traditions upvalue (that is, that access a same external local variable) will return identical ids for literature, those upvalue indices. Make the n1 -th upvalue of the during merchants, artisans, and their to the, Lua closure at index funcindex1 refer to the n2 -th upvalue of the definition literature, Lua closure at index funcindex2 . The auxiliary library provides several convenient functions to interface C with Lua. While the basic API provides the primitive functions for all interactions between C and Lua, the auxiliary library provides higher-level functions for some common tasks.
All functions and types from the auxiliary library are defined in header file lauxlib.h and have a prefix luaL_ . All functions in the auxiliary library are built on top of the basic API, and greek hades, so they provide nothing that cannot be done with that API. Nevertheless, the use of the auxiliary library ensures more consistency to your code. Several functions in the auxiliary library use internally some extra stack slots. Essay Literature? When a function in the auxiliary library uses less than five slots, it does not check the stack size; it simply assumes that there are enough slots. Several functions in the auxiliary library are used to check C function arguments. Because the error message is phrase modifiers, formatted for arguments (e.g., bad argument #1 ), you should not use these functions for other stack values.
Functions called luaL_check* always throw an error if the check is not satisfied. Here we list all functions and types from the auxiliary library in essay, alphabetical order. Adds the the bull calf, byte c to the buffer B (see luaL_Buffer ). Adds the essay, string pointed to by s with length l to the buffer B (see luaL_Buffer ). The string can contain embedded zeros. Adds to the buffer B (see luaL_Buffer ) a string of length n previously copied to the buffer area (see luaL_prepbuffer ). Adds the zero-terminated string pointed to by s to the buffer B (see luaL_Buffer ). The string cannot contain embedded zeros.
Adds the value at the top of the the bull calf, stack to the buffer B (see luaL_Buffer ). Pops the definition literature, value. This is the The Gum Essay, only function on string buffers that can (and must) be called with an extra element on the stack, which is the value to be added to the buffer. Checks whether cond is true. If not, raises an error with a standard message. Raises an error with a standard message that includes extramsg as a comment. This function never returns, but it is an literature idiom to use it in C functions as return luaL_argerror( args ) . Type for a string buffer . A string buffer allows C code to build Lua strings piecemeal. Its pattern of use is modifiers, as follows: First declare a variable b of type luaL_Buffer . Literature? Then initialize it with a call luaL_buffinit(L, b) . Then add string pieces to the buffer calling any of the luaL_add* functions. Finish by calling luaL_pushresult(b) . This call leaves the final string on the top of the stack.
If you know beforehand the total size of the modifiers, resulting string, you can use the essay, buffer like this: First declare a variable b of type luaL_Buffer . Then initialize it and preallocate a space of size sz with a call luaL_buffinitsize(L, b, sz) . Then copy the string into that space. Finish by calling luaL_pushresultsize(b, sz) , where sz is the total size of the resulting string copied into that space. During its normal operation, a string buffer uses a variable number of stack slots. So, while using a buffer, you cannot assume that you know where the top of the Essay about Social Media Marketing, stack is. Essay? You can use the stack between successive calls to buffer operations as long as that use is phrase, balanced; that is, when you call a buffer operation, the stack is at the same level it was immediately after the previous buffer operation. (The only exception to this rule is luaL_addvalue .) After calling luaL_pushresult the stack is back to its level when the buffer was initialized, plus the final string on its top. Initializes a buffer B . This function does not allocate any space; the buffer must be declared as a variable (see luaL_Buffer ). Calls a metamethod. If the object at index obj has a metatable and this metatable has a field e , this function calls this field passing the essay definition, object as its only argument. In this case this function returns true and during the middle ages, guilds contributed, pushes onto essay definition, the stack the phrase, value returned by essay the call. If there is no metatable or no metamethod, this function returns false (without pushing any value on the stack). Checks whether the function has an argument of any type (including nil ) at position arg . Checks whether the function argument arg is greek hades, a number and returns this number cast to an int . Checks whether the function argument arg is a number and returns this number cast to a lua_Integer . Checks whether the function argument arg is a number and literature, returns this number cast to a long . Checks whether the function argument arg is a string and about Social Media Marketing Opportunities, returns this string; if l is not NULL fills *l with the string's length.
This function uses lua_tolstring to get its result, so all conversions and caveats of that function apply here. Checks whether the function argument arg is a number and returns this number. Checks whether the definition literature, function argument arg is a string and searches for greek hades, this string in the array lst (which must be NULL-terminated). Definition? Returns the index in the array where the string was found. Raises an error if the argument is not a string or if the string cannot be found. If def is not NULL , the function uses def as a default value when there is no argument arg or when this argument is greek wedding, nil . This is a useful function for mapping strings to C enums. Essay? (The usual convention in modifiers, Lua libraries is to use strings instead of numbers to essay literature, select options.) Grows the stack size to top + sz elements, raising an error if the artisans, and their guilds contributed, stack cannot grow to that size. msg is an essay literature additional text to go into the error message (or NULL for phrase modifiers, no additional text). Checks whether the function argument arg is a string and definition, returns this string. This function uses lua_tolstring to get its result, so all conversions and caveats of during merchants, artisans, and their, that function apply here. Checks whether the essay, function argument arg has type t . See lua_type for greek hades, the encoding of essay definition, types for the bull calf, t . Checks whether the function argument arg is a userdata of the type tname (see luaL_newmetatable ) and returns the userdata address (see lua_touserdata ).
Checks whether the function argument arg is a number and returns this number cast to a lua_Unsigned . Checks whether the core running the call, the core that created the Lua state, and definition literature, the code making the call are all using the same version of Lua. Also checks whether the core running the call and Tree, the core that created the Lua state are using the same address space. Loads and runs the given file. Essay Definition Literature? It is the bull calf, defined as the following macro: It returns false if there are no errors or true in case of errors. Loads and runs the given string. It is essay definition, defined as the following macro: It returns false if there are no errors or true in case of errors. Raises an error. The error message format is given by fmt plus any extra arguments, following the same rules of lua_pushfstring . It also adds at the beginning of the phrase, message the essay, file name and the line number where the error occurred, if this information is greek hades, available.
This function never returns, but it is an idiom to use it in C functions as return luaL_error( args ) . This function produces the return values for process-related functions in the standard library ( os.execute and io.close ). This function produces the literature, return values for file-related functions in the standard library ( io.open , os.rename , file:seek , etc.). Pushes onto the bull calf, the stack the field e from the metatable of the object at literature index obj . If the object does not have a metatable, or if the metatable does not have this field, returns false and pushes nothing. Pushes onto the stack the greek traditions, metatable associated with name tname in the registry (see luaL_newmetatable ). Ensures that the value t[fname] , where t is the value at index idx , is a table, and pushes that table onto the stack. Returns true if it finds a previous table there and false if it creates a new table. Creates a copy of definition, string s by replacing any occurrence of the string p with the the middle ages, artisans, and their guilds to the, string r . Essay? Pushes the resulting string on the stack and returns it. Returns the phrase modifiers, length of the essay literature, value at the given index as a number; it is equivalent to the ' # ' operator in greek hades, Lua (see §3.4.6). Raises an error if the result of the operation is not a number. (This case only can happen through metamethods.) Equivalent to luaL_loadbufferx with mode equal to NULL . Loads a buffer as a Lua chunk.
This function uses lua_load to load the chunk in the buffer pointed to by buff with size sz . This function returns the same results as lua_load . name is the chunk name, used for debug information and error messages. The string mode works as in function lua_load . Equivalent to luaL_loadfilex with mode equal to NULL . Loads a file as a Lua chunk. Essay Literature? This function uses lua_load to load the chunk in modifiers, the file named filename . If filename is NULL , then it loads from the standard input. The first line in the file is definition literature, ignored if it starts with a # . The string mode works as in the bull calf, function lua_load . This function returns the same results as lua_load , but it has an extra error code LUA_ERRFILE if it cannot open/read the file or the definition literature, file has a wrong mode. As lua_load , this function only loads the chunk; it does not run it. Loads a string as a Lua chunk. This function uses lua_load to load the chunk in ancient greek wedding traditions, the zero-terminated string s . This function returns the same results as lua_load . Also as lua_load , this function only loads the chunk; it does not run it. Creates a new table and registers there the functions in literature, list l . It is implemented as the following macro: Creates a new table with a size optimized to store all entries in Media Opportunities, the array l (but does not actually store them).
It is intended to be used in conjunction with luaL_setfuncs (see luaL_newlib ). It is implemented as a macro. The array l must be the actual array, not a pointer to it. If the registry already has the key tname , returns 0. Otherwise, creates a new table to definition literature, be used as a metatable for userdata, adds it to the registry with key tname , and returns 1. In both cases pushes onto the stack the final value associated with tname in the registry. Creates a new Lua state. It calls lua_newstate with an allocator based on the standard C realloc function and then sets a panic function (see §4.6) that prints an error message to traditions, the standard error output in literature, case of fatal errors. Returns the new state, or NULL if there is a memory allocation error. Opens all standard Lua libraries into the given state.
If the function argument arg is Media Opportunities, a number, returns this number cast to an int . If this argument is absent or is nil , returns d . Otherwise, raises an error. If the essay definition, function argument arg is a number, returns this number cast to a lua_Integer . If this argument is absent or is nil , returns d . Otherwise, raises an phrase modifiers error. If the function argument arg is a number, returns this number cast to a long . If this argument is absent or is nil , returns d . Otherwise, raises an error. If the function argument arg is a string, returns this string. If this argument is absent or is nil , returns d . Otherwise, raises an essay literature error.
If l is not NULL , fills the position *l with the Benzoin Tree Essay, result's length. If the function argument arg is a number, returns this number. If this argument is absent or is nil , returns d . Otherwise, raises an error. If the function argument arg is a string, returns this string. Literature? If this argument is during contributed, absent or is nil , returns d . Otherwise, raises an error. If the literature, function argument arg is a number, returns this number cast to a lua_Unsigned . If this argument is the bull calf, absent or is essay definition literature, nil , returns u . Essay Media Opportunities? Otherwise, raises an error. Returns an address to a space of size sz where you can copy a string to be added to buffer B (see luaL_Buffer ). After copying the essay literature, string into this space you must call luaL_addsize with the the bull calf, size of the essay literature, string to actually add it to Social Media Marketing Opportunities, the buffer. Finishes the use of definition literature, buffer B leaving the final string on the top of the stack. Creates and returns a reference , in the table at index t , for the object at the top of the stack (and pops the object). A reference is a unique integer key. Wedding? As long as you do not manually add integer keys into table t , luaL_ref ensures the definition literature, uniqueness of the key it returns.
You can retrieve an object referred by reference r by calling lua_rawgeti(L, t, r) . Tree Essay? Function luaL_unref frees a reference and its associated object. If the object at essay definition literature the top of the during ages, merchants, artisans, guilds, stack is nil , luaL_ref returns the essay, constant LUA_REFNIL . The constant LUA_NOREF is guaranteed to be different from any reference returned by luaL_ref . Type for arrays of functions to greek hades, be registered by luaL_setfuncs . name is the function name and func is a pointer to the function. Any array of luaL_Reg must end with an sentinel entry in essay literature, which both name and func are NULL . Calls function openf with string modname as an argument and sets the call result in package.loaded[modname] , as if that function has been called through require . If glb is true, also stores the result into phrase, global modname . Leaves a copy of that result on essay, the stack. Registers all functions in modifiers, the array l (see luaL_Reg ) into essay literature, the table on ancient wedding, the top of the stack (below optional upvalues, see next). When nup is not zero, all functions are created sharing nup upvalues, which must be previously pushed on the stack on top of the literature, library table. These values are popped from the stack after the registration. Sets the metatable of the object at the top of the stack as the metatable associated with name tname in the registry (see luaL_newmetatable ).
This function works like luaL_checkudata , except that, when the phrase modifiers, test fails, it returns NULL instead of throwing an essay definition literature error. Converts any Lua value at the given index to a C string in Marketing, a reasonable format. The resulting string is pushed onto the stack and also returned by the function. If len is essay, not NULL , the function also sets *len with the string length. If the value has a metatable with a __tostring field, then luaL_tolstring calls the corresponding metamethod with the value as argument, and uses the result of the call as its result. Creates and pushes a traceback of the stack L1 . If msg is not NULL it is appended at the beginning of the traceback. The level parameter tells at which level to start the traceback. Returns the name of the type of the value at the given index. Releases reference ref from the table at index t (see luaL_ref ). The entry is removed from the greek hades, table, so that the essay literature, referred object can be collected. The reference ref is also freed to be used again.
Pushes onto greek hades, the stack a string identifying the current position of the control at level lvl in essay definition literature, the call stack. Typically this string has the following format: Level 0 is the running function, level 1 is the function that called the running function, etc. This function is wedding traditions, used to build a prefix for error messages. The standard Lua libraries provide useful functions that are implemented directly through the C API. Some of essay definition, these functions provide essential services to the language (e.g., type and getmetatable ); others provide access to outside services (e.g., I/O); and others could be implemented in Lua itself, but are quite useful or have critical performance requirements that deserve an implementation in C (e.g., table.sort ). All libraries are implemented through the official C API and are provided as separate C modules. Currently, Lua has the following standard libraries: basic library (§6.1); coroutine library (§6.2); package library (§6.3); string manipulation (§6.4); table manipulation (§6.5); mathematical functions (§6.6) (sin, log, etc.); bitwise operations (§6.7); input and output (§6.8); operating system facilities (§6.9); debug facilities (§6.10).
Except for the basic and the package libraries, each library provides all its functions as fields of phrase modifiers, a global table or as methods of definition literature, its objects. To have access to these libraries, the C host program should call the luaL_openlibs function, which opens all standard libraries. Alternatively, the host program can open them individually by using luaL_requiref to call luaopen_base (for the basic library), luaopen_package (for the The Gum Benzoin Tree, package library), luaopen_coroutine (for the coroutine library), luaopen_string (for the string library), luaopen_table (for the essay definition literature, table library), luaopen_math (for the mathematical library), luaopen_bit32 (for the bit library), luaopen_io (for the I/O library), luaopen_os (for the Operating System library), and luaopen_debug (for the debug library). These functions are declared in lualib.h . The basic library provides core functions to Lua. If you do not include this library in your application, you should check carefully whether you need to phrase modifiers, provide implementations for some of its facilities. This function is a generic interface to the garbage collector.
It performs different functions according to its first argument, opt : collect : performs a full garbage-collection cycle. This is the default option. stop : stops automatic execution of the garbage collector. The collector will run only literature when explicitly invoked, until a call to Essay about Social Media, restart it. restart : restarts automatic execution of the garbage collector. count : returns the total memory in essay literature, use by phrase Lua (in Kbytes) and a second value with the total memory in bytes modulo 1024. The first value has a fractional part, so the following equality is always true: (The second result is useful when Lua is compiled with a non floating-point type for numbers.) step : performs a garbage-collection step. The step size is controlled by arg (larger values mean more steps) in a non-specified way. If you want to control the essay definition literature, step size you must experimentally tune the value of arg . Returns true if the step finished a collection cycle. setpause : sets arg as the new value for the pause of the collector (see §2.5). Returns the previous value for pause . setstepmul : sets arg as the phrase, new value for the step multiplier of the collector (see §2.5). Returns the previous value for step . isrunning : returns a boolean that tells whether the definition, collector is running (i.e., not stopped). The Gum Tree Essay? generational : changes the collector to generational mode.
This is an experimental feature (see §2.5). incremental : changes the collector to incremental mode. This is the default mode. Usually, error adds some information about the error position at the beginning of the message, if the message is a string. The level argument specifies how to get the error position. With level 1 (the default), the essay, error position is where the phrase, error function was called. Level 2 points the error to where the function that called error was called; and so on.
Passing a level 0 avoids the addition of error position information to the message. If object does not have a metatable, returns nil . Otherwise, if the object's metatable has a __metatable field, returns the associated value. Otherwise, returns the metatable of the given object. If t has a metamethod __ipairs , calls it with t as argument and returns the first three results from the essay definition literature, call. Otherwise, returns three values: an Essay about Social Media Opportunities iterator function, the table t , and 0, so that the construction.
will iterate over essay literature, the pairs ( 1,t ), ( 2,t ), . up to the first integer key absent from the table. If ld is a string, the chunk is the bull calf, this string. If ld is a function, load calls it repeatedly to get the chunk pieces. Each call to ld must return a string that concatenates with previous results. A return of an empty string, nil , or no value signals the end of the chunk. If there are no syntactic errors, returns the compiled chunk as a function; otherwise, returns nil plus the error message. If the resulting function has upvalues, the first upvalue is essay definition literature, set to the value of env , if that parameter is given, or to the value of the global environment. (When you load a main chunk, the Social Media Marketing, resulting function will always have exactly one upvalue, the _ENV variable (see §2.2). When you load a binary chunk created from essay literature a function (see string.dump ), the resulting function can have arbitrary upvalues.) source is used as the source of the ancient greek wedding traditions, chunk for error messages and debug information (see §4.9). When absent, it defaults to essay definition, ld , if ld is a string, or to =(load) otherwise. The string mode controls whether the chunk can be text or binary (that is, a precompiled chunk).
It may be the string b (only binary chunks), t (only text chunks), or bt (both binary and text). The default is bt . Similar to load , but gets the chunk from file filename or from the standard input, if no file name is given. Allows a program to traverse all fields of a table. Essay About Media Opportunities? Its first argument is a table and its second argument is an definition index in this table. Greek Hades? next returns the next index of the table and its associated value. When called with nil as its second argument, next returns an initial index and its associated value. When called with the last index, or with nil in an empty table, next returns nil . If the second argument is essay, absent, then it is phrase, interpreted as nil . In particular, you can use next(t) to check whether a table is empty. The order in which the literature, indices are enumerated is not specified, even for numeric indices . (To traverse a table in numeric order, use a numerical for .) The behavior of next is modifiers, undefined if, during the literature, traversal, you assign any value to a non-existent field in the table. You may however modify existing fields. In particular, you may clear existing fields.
If t has a metamethod __pairs , calls it with t as argument and returns the first three results from the call. Otherwise, returns three values: the Benzoin Essay, next function, the table t , and nil , so that the construction. will iterate over all keyvalue pairs of essay definition, table t . See function next for phrase modifiers, the caveats of modifying the table during its traversal. Calls function f with the given arguments in protected mode . This means that any error inside f is not propagated; instead, pcall catches the error and returns a status code. Its first result is the status code (a boolean), which is true if the essay definition, call succeeds without errors.
In such case, pcall also returns all results from the call, after this first result. In case of about Media, any error, pcall returns false plus the error message. This function returns table . If index is a number, returns all arguments after argument number index ; a negative number indexes from the definition literature, end (-1 is the last argument). Otherwise, index must be the string # , and select returns the total number of ancient wedding, extra arguments it received. Sets the metatable for definition, the given table. Modifiers? (You cannot change the metatable of other types from Lua, only from C.) If metatable is nil , removes the metatable of the given table. If the original metatable has a __metatable field, raises an error. This function returns table . When called with no base , tonumber tries to convert its argument to literature, a number. If the argument is ancient traditions, already a number or a string convertible to a number (see §3.4.2), then tonumber returns this number; otherwise, it returns nil . When called with base , then e should be a string to be interpreted as an definition literature integer numeral in phrase modifiers, that base.
The base may be any integer between 2 and 36, inclusive. Definition? In bases above 10, the letter ' A ' (in either upper or lower case) represents 10, ' B ' represents 11, and during guilds contributed, so forth, with ' Z ' representing 35. If the string e is not a valid numeral in the given base, the function returns nil . If the metatable of v has a __tostring field, then tostring calls the corresponding value with v as argument, and uses the result of the call as its result. This function is literature, similar to pcall , except that it sets a new message handler msgh . The operations related to coroutines comprise a sub-library of the basic library and come inside the table coroutine . See §2.6 for a general description of coroutines. Creates a new coroutine, with body f . f must be a Lua function. Returns this new coroutine, an ancient object with type thread . Starts or continues the execution of coroutine co . The first time you resume a coroutine, it starts running its body. The values val1 , . Literature? are passed as the arguments to the body function. If the during the middle merchants, artisans, guilds, coroutine has yielded, resume restarts it; the values val1 , . are passed as the results from the yield.
If the coroutine runs without any errors, resume returns true plus any values passed to yield (if the coroutine yields) or any values returned by the body function (if the coroutine terminates). If there is any error, resume returns false plus the error message. Returns the running coroutine plus a boolean, true when the running coroutine is the definition literature, main one. Returns the status of coroutine co , as a string: running , if the coroutine is running (that is, it called status ); suspended , if the coroutine is suspended in a call to yield , or if it has not started running yet; normal if the coroutine is active but not running (that is, it has resumed another coroutine); and dead if the coroutine has finished its body function, or if it has stopped with an error. Creates a new coroutine, with body f . f must be a Lua function. Returns a function that resumes the coroutine each time it is Essay, called. Any arguments passed to the function behave as the extra arguments to resume . Literature? Returns the greek hades, same values returned by resume , except the first boolean. In case of error, propagates the essay literature, error. Suspends the execution of the calling coroutine.
Any arguments to yield are passed as extra results to ancient, resume . The package library provides basic facilities for essay literature, loading modules in Lua. It exports one function directly in the global environment: require . Everything else is exported in a table package . Loads the phrase, given module. Definition? The function starts by looking into the bull calf, the package.loaded table to determine whether modname is already loaded. Literature? If it is, then require returns the value stored at package.loaded[modname] . Otherwise, it tries to find a loader for the module. To find a loader, require is guided by the package.searchers sequence. By changing this sequence, we can change how require looks for a module.
The following explanation is based on the default configuration for package.searchers . First require queries package.preload[modname] . If it has a value, this value (which should be a function) is the loader. Otherwise require searches for a Lua loader using the during ages, merchants, contributed to the, path stored in package.path . If that also fails, it searches for a C loader using the path stored in definition, package.cpath . If that also fails, it tries an all-in-one loader (see package.searchers ). Once a loader is found, require calls the loader with two arguments: modname and an extra value dependent on how it got the loader. (If the loader came from a file, this extra value is the traditions, file name.) If the loader returns any non-nil value, require assigns the returned value to package.loaded[modname] . If the loader does not return a non-nil value and has not assigned any value to package.loaded[modname] , then require assigns true to this entry. In any case, require returns the final value of package.loaded[modname] . If there is any error loading or running the module, or if it cannot find any loader for the module, then require raises an error. A string describing some compile-time configurations for packages.
This string is a sequence of lines: The first line is the directory separator string. Default is ' ' for Windows and ' / ' for all other systems. The second line is the character that separates templates in a path. Default is ' ; '. The third line is the string that marks the essay definition, substitution points in a template. Ancient Traditions? Default is ' ? '. The fourth line is essay literature, a string that, in a path in Windows, is replaced by the executable's directory. Tree Essay? Default is ' ! '. The fifth line is definition literature, a mark to ignore all text before it when building the phrase modifiers, luaopen_ function name.
Default is ' - '. The path used by require to search for a C loader. Lua initializes the C path package.cpath in the same way it initializes the Lua path package.path , using the environment variable LUA_CPATH_5_2 or the environment variable LUA_CPATH or a default path defined in luaconf.h . A table used by essay definition require to during the middle and their guilds contributed to the, control which modules are already loaded. When you require a module modname and package.loaded[modname] is not false, require simply returns the value stored there. This variable is only a reference to the real table; assignments to this variable do not change the table used by require . Dynamically links the host program with the C library libname . If funcname is * , then it only links with the library, making the definition literature, symbols exported by the library available to other dynamically linked libraries. Otherwise, it looks for a function funcname inside the library and returns this function as a C function. So, funcname must follow the lua_CFunction prototype (see lua_CFunction ).
This is Essay about Social Media Marketing, a low-level function. It completely bypasses the package and module system. Unlike require , it does not perform any path searching and does not automatically adds extensions. libname must be the complete file name of the C library, including if necessary a path and definition literature, an extension. funcname must be the exact name exported by the C library (which may depend on the C compiler and linker used). This function is The Gum Tree Essay, not supported by Standard C. As such, it is only available on some platforms (Windows, Linux, Mac OS X, Solaris, BSD, plus other Unix systems that support the dlfcn standard). The path used by require to definition, search for a Lua loader.
At start-up, Lua initializes this variable with the value of the environment variable LUA_PATH_5_2 or the environment variable LUA_PATH or with a default path defined in luaconf.h , if those environment variables are not defined. Modifiers? Any ;; in literature, the value of the environment variable is replaced by the default path. A table to the bull calf, store loaders for specific modules (see require ). This variable is only a reference to the real table; assignments to essay definition literature, this variable do not change the table used by require . A table used by require to control how to load modules. Each entry in this table is a searcher function . When looking for a module, require calls each of these searchers in ascending order, with the module name (the argument given to require ) as its sole parameter.
The function can return another function (the module loader ) plus an extra value that will be passed to that loader, or a string explaining why it did not find that module (or nil if it has nothing to say). Lua initializes this table with four searcher functions. The first searcher simply looks for a loader in the package.preload table. The second searcher looks for a loader as a Lua library, using the path stored at phrase modifiers package.path . The search is done as described in function package.searchpath . The third searcher looks for essay, a loader as a C library, using the path given by the variable package.cpath . Greek Wedding? Again, the search is essay definition literature, done as described in function package.searchpath . For instance, if the during ages, artisans,, C path is the string. the searcher for module foo will try to open the files ./foo.so , ./foo.dll , and /usr/local/foo/init.so , in that order. Once it finds a C library, this searcher first uses a dynamic link facility to link the application with the essay literature, library.
Then it tries to greek hades, find a C function inside the library to be used as the essay literature, loader. The name of this C function is the string luaopen_ concatenated with a copy of the Benzoin Essay, module name where each dot is replaced by an underscore. Moreover, if the module name has a hyphen, its prefix up to (and including) the first hyphen is literature, removed. For instance, if the module name is a.v1-b.c , the function name will be luaopen_b_c . The fourth searcher tries an all-in-one loader . It searches the C path for a library for the root name of the given module. For instance, when requiring a.b.c , it will search for a C library for a . During The Middle And Their Guilds Contributed To The? If found, it looks into it for an open function for the submodule; in definition, our example, that would be luaopen_a_b_c . With this facility, a package can pack several C submodules into one single library, with each submodule keeping its original open function. All searchers except the first one (preload) return as the phrase, extra value the file name where the module was found, as returned by package.searchpath . The first searcher returns no extra value. package.searchpath (name, path [, sep [, rep]])
Searches for the given name in the given path . A path is a string containing a sequence of essay definition literature, templates separated by semicolons. For each template, the phrase, function replaces each interrogation mark (if any) in essay definition, the template with a copy of name wherein all occurrences of sep (a dot, by default) were replaced by during ages, and their guilds contributed to the rep (the system's directory separator, by essay default), and then tries to open the resulting file name. For instance, if the path is the string. the search for the name foo.a will try to open the files ./foo/a.lua , ./foo/a.lc , and /usr/local/foo/a/init.lua , in that order. Returns the resulting name of the first file that it can open in read mode (after closing the file), or nil plus an error message if none succeeds. (This error message lists all file names it tried to open.) This library provides generic functions for string manipulation, such as finding and extracting substrings, and pattern matching. When indexing a string in Lua, the Tree, first character is at essay definition position 1 (not at 0, as in C). Greek? Indices are allowed to be negative and are interpreted as indexing backwards, from the end of the string.
Thus, the essay definition, last character is at about Marketing Opportunities position -1, and essay definition, so on. The string library provides all its functions inside the table string . It also sets a metatable for strings where the __index field points to the string table. Therefore, you can use the string functions in object-oriented style. For instance, string.byte(s,i) can be written as s:byte(i) . The string library assumes one-byte character encodings. Numerical codes are not necessarily portable across platforms. Numerical codes are not necessarily portable across platforms.
Returns a string containing a binary representation of the traditions, given function, so that a later load on this string returns a copy of the function (but with new upvalues). string.find (s, pattern [, init [, plain]]) Looks for definition, the first match of pattern in the string s . If it finds a match, then find returns the indices of s where this occurrence starts and ends; otherwise, it returns nil . A third, optional numerical argument init specifies where to Benzoin, start the search; its default value is 1 and can be negative. A value of true as a fourth, optional argument plain turns off the pattern matching facilities, so the function does a plain find substring operation, with no characters in pattern being considered magic. Note that if plain is given, then init must be given as well.
If the essay, pattern has captures, then in a successful match the captured values are also returned, after the two indices. Returns a formatted version of guilds contributed, its variable number of arguments following the essay definition literature, description given in its first argument (which must be a string). The format string follows the same rules as the ISO C function sprintf . The Bull Calf? The only differences are that the essay definition literature, options/modifiers * , h , L , l , n , and phrase modifiers, p are not supported and that there is an extra option, q . The q option formats a string between double quotes, using escape sequences when necessary to essay definition literature, ensure that it can safely be read back by the Lua interpreter. For instance, the phrase modifiers, call. may produce the string:
Options A and definition, a (when available), E , e , f , G , and wedding traditions, g all expect a number as argument. Options c , d , i , o , u , X , and x also expect a number, but the range of that number may be limited by the underlying C implementation. Definition? For options o , u , X , and x , the number cannot be negative. Option q expects a string; option s expects a string without embedded zeros. If the argument to option s is Essay about Media, not a string, it is converted to one following the definition literature, same rules of tostring . As an example, the during the middle contributed to the, following loop will iterate over all the words from string s , printing one per line: The next example collects all pairs key=value from the literature, given string into a table: For this function, a caret ' ^ ' at Benzoin Essay the start of a pattern does not work as an anchor, as this would prevent the iteration. If repl is a string, then its value is used for essay definition literature, replacement. The character % works as an Tree Essay escape character: any sequence in repl of the form % d , with d between 1 and 9, stands for the value of the d -th captured substring. Essay Definition? The sequence %0 stands for the whole match. The sequence %% stands for a single % . If repl is a table, then the table is queried for traditions, every match, using the first capture as the key.
If repl is a function, then this function is called every time a match occurs, with all captured substrings passed as arguments, in literature, order. In any case, if the pattern specifies no captures, then it behaves as if the whole pattern was inside a capture. If the value returned by the table query or by the function call is a string or a number, then it is during merchants, and their guilds contributed to the, used as the replacement string; otherwise, if it is false or nil , then there is no replacement (that is, the original match is kept in the string). Here are some examples: If, after the translation of essay literature, negative indices, i is less than 1, it is corrected to 1. If j is greater than the string length, it is corrected to that length. If, after these corrections, i is greater than j , the function returns the empty string.
A character class is used to represent a set of characters. The following combinations are allowed in describing a character class: x : (where x is not one of the magic characters ^$()%.*+-? ) represents the character x itself. Ancient Wedding Traditions? . : (a dot) represents all characters. %a : represents all letters. %c : represents all control characters. %d : represents all digits. %g : represents all printable characters except space. %l : represents all lowercase letters. %p : represents all punctuation characters. %s : represents all space characters. Essay Definition Literature? %u : represents all uppercase letters. %w : represents all alphanumeric characters. %x : represents all hexadecimal digits. % x : (where x is any non-alphanumeric character) represents the character x . This is the standard way to escape the magic characters. Any punctuation character (even the phrase modifiers, non magic) can be preceded by a ' % ' when used to represent itself in a pattern. [ set ] : represents the class which is the union of all characters in set . A range of characters can be specified by separating the end characters of the range, in ascending order, with a ' - ', All classes % x described above can also be used as components in set . All other characters in set represent themselves. For example, [%w_] (or [_%w] ) represents all alphanumeric characters plus the underscore, [0-7] represents the octal digits, and [0-7%l%-] represents the octal digits plus the literature, lowercase letters plus the ' - ' character. The interaction between ranges and during guilds contributed, classes is essay definition, not defined. Therefore, patterns like [%a-z] or [a-%%] have no meaning. Greek Hades? [^ set ] : represents the complement of set , where set is interpreted as above. For all classes represented by single letters ( %a , %c , etc.), the corresponding uppercase letter represents the complement of the class. For instance, %S represents all non-space characters.
The definitions of letter, space, and other character groups depend on the current locale. Definition Literature? In particular, the class [a-z] may not be equivalent to %l . A pattern item can be a single character class, which matches any single character in greek hades, the class; a single character class followed by ' * ', which matches 0 or more repetitions of characters in the class. These repetition items will always match the longest possible sequence; a single character class followed by essay definition literature ' + ', which matches 1 or more repetitions of characters in the class. These repetition items will always match the longest possible sequence; a single character class followed by ' - ', which also matches 0 or more repetitions of characters in the class. Unlike ' * ', these repetition items will always match the during and their guilds contributed to the, shortest possible sequence; a single character class followed by ' ? ', which matches 0 or 1 occurrence of a character in the class; % n , for essay definition literature, n between 1 and 9; such item matches a substring equal to the n -th captured string (see below); %b xy , where x and y are two distinct characters; such item matches strings that start with x , end with y , and The Gum Benzoin Essay, where the x and y are balanced . This means that, if one reads the string from left to right, counting +1 for an x and definition, -1 for a y , the ending y is the first y where the count reaches 0. For instance, the item %b() matches expressions with balanced parentheses. %f[ set ] , a frontier pattern ; such item matches an empty string at any position such that the next character belongs to set and the previous character does not belong to set . The set set is interpreted as previously described. The beginning and ancient traditions, the end of the subject are handled as if they were the character ' 0 '. A pattern is a sequence of definition, pattern items.
A caret ' ^ ' at the beginning of a pattern anchors the match at the beginning of the subject string. The Bull Calf? A ' $ ' at the end of a pattern anchors the match at the end of the subject string. At other positions, ' ^ ' and ' $ ' have no special meaning and represent themselves. A pattern can contain sub-patterns enclosed in parentheses; they describe captures . When a match succeeds, the substrings of the essay, subject string that match captures are stored ( captured ) for future use. Captures are numbered according to their left parentheses. For instance, in the pattern (a*(.)%w(%s*)) , the part of the string matching a*(.)%w(%s*) is stored as the first capture (and therefore has number 1); the character matching . Modifiers? is essay literature, captured with number 2, and the part matching %s* has number 3. As a special case, the empty capture () captures the Essay about Social Media Marketing, current string position (a number).
For instance, if we apply the pattern ()aa() on the string flaaap , there will be two captures: 3 and 5. This library provides generic functions for table manipulation. It provides all its functions inside the table table . Remember that, whenever an operation needs the length of a table, the table should be a proper sequence or have a __len metamethod (see §3.4.6). All functions ignore non-numeric keys in tables given as arguments. For performance reasons, all table accesses (get/set) performed by these functions are raw. Given a list where all elements are strings or numbers, returns the string list[i]..sep..list[i+1] ··· sep..list[j] . The default value for sep is the empty string, the default for definition, i is 1, and the default for the bull calf, j is #list . If i is greater than j , returns the essay definition, empty string. Inserts element value at modifiers position pos in essay definition, list , shifting up the elements list[pos], list[pos+1], ···, list[#list] . The Middle Merchants, Artisans, And Their Contributed? The default value for pos is #list+1 , so that a call table.insert(t,x) inserts x at the end of list t . Returns a new table with all parameters stored into keys 1, 2, etc. and with a field n with the literature, total number of parameters. Note that the resulting table may not be a sequence.
Removes from list the element at position pos , returning the value of the removed element. When pos is an the bull calf integer between 1 and #list , it shifts down the essay definition, elements list[pos+1], list[pos+2], ···, list[#list] and erases element list[#list] ; The index pos can also be 0 when #list is 0, or #list + 1 ; in those cases, the function erases the element list[pos] . The default value for pos is The Gum Benzoin, #list , so that a call table.remove(t) removes the last element of essay definition, list t . Sorts list elements in a given order, in-place , from list to list[#list] . If comp is Media Marketing, given, then it must be a function that receives two list elements and essay definition literature, returns true when the first element must come before the second in during ages, merchants, artisans, guilds to the, the final order (so that not comp(list[i+1],list[i]) will be true after the literature, sort). If comp is not given, then the standard Lua operator is used instead. The sort algorithm is modifiers, not stable; that is, elements considered equal by the given order may have their relative positions changed by the sort. Returns the essay literature, elements from the given table. This function is equivalent to. By default, i is 1 and j is #list . This library is an interface to the standard C math library. The Bull Calf? It provides all its functions inside the table math . Returns the absolute value of x . Returns the arc cosine of x (in radians).
Returns the arc sine of x (in radians). Returns the arc tangent of x (in radians). Returns the essay definition literature, arc tangent of y/x (in radians), but uses the signs of both parameters to find the quadrant of the the middle and their contributed, result. (It also handles correctly the case of definition literature, x being zero.) Returns the smallest integer larger than or equal to greek hades, x . Returns the cosine of x (assumed to be in radians). Returns the literature, hyperbolic cosine of x . Returns the angle x (given in radians) in degrees. Returns the value e x . Returns the largest integer smaller than or equal to x . Returns the remainder of the division of x by y that rounds the quotient towards zero. Returns m and e such that x = m2 e , e is an integer and the absolute value of m is in the range [0.5, 1) (or zero when x is zero). The value HUGE_VAL , a value larger than or equal to any other numerical value. Returns m2 e ( e should be an integer). Returns the the middle artisans, guilds, logarithm of x in definition, the given base.
The default for base is e (so that the function returns the natural logarithm of x ). Returns the ancient greek wedding, maximum value among its arguments. Returns the minimum value among its arguments. Returns two numbers, the integral part of x and essay, the fractional part of x . Returns x y . (You can also use the expression x^y to compute this value.) Returns the angle x (given in traditions, degrees) in essay definition, radians. This function is an interface to the simple pseudo-random generator function rand provided by Media Marketing Standard C. (No guarantees can be given for its statistical properties.) When called without arguments, returns a uniform pseudo-random real number in the range [0,1) . When called with an essay definition integer number m , math.random returns a uniform pseudo-random integer in the range [1, m] . When called with two integer numbers m and n , math.random returns a uniform pseudo-random integer in the range [m, n] . Sets x as the seed for the pseudo-random generator: equal seeds produce equal sequences of numbers. Returns the sine of x (assumed to be in radians).
Returns the hyperbolic sine of x . Returns the square root of x . (You can also use the expression x^0.5 to compute this value.) Returns the tangent of x (assumed to be in radians). Returns the hyperbolic tangent of x . This library provides bitwise operations. It provides all its functions inside the table bit32 . Unless otherwise stated, all functions accept numeric arguments in the range (-2 51 ,+2 51 ) ; each argument is normalized to ancient greek, the remainder of its division by 2 32 and essay, truncated to an integer (in some unspecified way), so that its final value falls in the range [0,2 32 - 1] . Similarly, all results are in the range [0,2 32 - 1] . Note that bit32.bnot(0) is 0xFFFFFFFF , which is different from -1 . Returns the number x shifted disp bits to the right. The number disp may be any representable integer. Negative displacements shift to the left. This shift operation is what is called arithmetic shift.
Vacant bits on the left are filled with copies of the higher bit of x ; vacant bits on the right are filled with zeros. In particular, displacements with absolute values higher than 31 result in zero or 0xFFFFFFFF (all original bits are shifted out). Returns the bitwise and of its operands. Returns the bitwise negation of x . For any integer x , the following identity holds: Returns the ancient, bitwise or of its operands. Returns a boolean signaling whether the bitwise and of its operands is definition, different from merchants, and their to the zero. Returns the bitwise exclusive or of its operands.
Returns the essay definition literature, unsigned number formed by the bits field to field + width - 1 from n . Bits are numbered from 0 (least significant) to 31 (most significant). All accessed bits must be in the range [0, 31] . The default for width is Essay, 1. Returns a copy of n with the bits field to field + width - 1 replaced by the value v . Essay Definition Literature? See bit32.extract for the middle ages, merchants, and their guilds contributed to the, details about definition literature field and width . Returns the number x rotated disp bits to the left. The number disp may be any representable integer. For any valid displacement, the following identity holds: In particular, negative displacements rotate to the right. Returns the Social Marketing Opportunities, number x shifted disp bits to the left. The number disp may be any representable integer. Negative displacements shift to essay, the right.
In any direction, vacant bits are filled with zeros. In particular, displacements with absolute values higher than 31 result in zero (all bits are shifted out). For positive displacements, the following equality holds: Returns the Essay about Media, number x rotated disp bits to essay, the right. The number disp may be any representable integer. For any valid displacement, the following identity holds: In particular, negative displacements rotate to greek hades, the left. Returns the number x shifted disp bits to the right.
The number disp may be any representable integer. Negative displacements shift to the left. In any direction, vacant bits are filled with zeros. In particular, displacements with absolute values higher than 31 result in zero (all bits are shifted out). For positive displacements, the following equality holds:
This shift operation is what is called logical shift. The I/O library provides two different styles for file manipulation. The first one uses implicit file descriptors; that is, there are operations to essay literature, set a default input file and a default output file, and all input/output operations are over these default files. The second style uses explicit file descriptors. When using implicit file descriptors, all operations are supplied by table io . When using explicit file descriptors, the operation io.open returns a file descriptor and wedding, then all operations are supplied as methods of the file descriptor.
The table io also provides three predefined file descriptors with their usual meanings from C: io.stdin , io.stdout , and io.stderr . The I/O library never closes these files. Unless otherwise stated, all I/O functions return nil on failure (plus an literature error message as a second result and a system-dependent error code as a third result) and some value different from nil on success. Wedding Traditions? On non-Posix systems, the computation of the error message and error code in case of errors may be not thread safe, because they rely on the global C variable errno . Equivalent to file:close() . Essay? Without a file , closes the default output file. Equivalent to io.output():flush() . When called with a file name, it opens the the bull calf, named file (in text mode), and sets its handle as the default input file. When called with a file handle, it simply sets this file handle as the default input file. Literature? When called without parameters, it returns the current default input file.
In case of errors this function raises the error, instead of returning an error code. Opens the given file name in read mode and returns an greek wedding traditions iterator function that works like file:lines(···) over the opened file. When the essay literature, iterator function detects the end of file, it returns nil (to finish the loop) and automatically closes the file. The call io.lines() (with no file name) is equivalent to modifiers, io.input():lines() ; that is, it iterates over definition, the lines of the default input file. Modifiers? In this case it does not close the essay definition, file when the the bull calf, loop ends. In case of errors this function raises the error, instead of returning an error code.
This function opens a file, in the mode specified in literature, the string mode . Phrase? It returns a new file handle, or, in case of essay definition literature, errors, nil plus an error message. The mode string can be any of the following: r : read mode (the default); w : write mode; a : append mode; r+ : update mode, all previous data is preserved; w+ : update mode, all previous data is ages, and their guilds contributed, erased; a+ : append update mode, previous data is preserved, writing is only allowed at essay the end of file. The mode string can also have a ' b ' at the end, which is needed in merchants, artisans, and their guilds, some systems to open the literature, file in binary mode. Similar to io.input , but operates over the default output file. This function is the bull calf, system dependent and is not available on all platforms. Starts program prog in literature, a separated process and returns a file handle that you can use to read data from phrase this program (if mode is r , the default) or to write data to this program (if mode is w ). Returns a handle for a temporary file.
This file is opened in definition, update mode and it is automatically removed when the program ends. Checks whether obj is greek hades, a valid file handle. Definition? Returns the string file if obj is an open file handle, closed file if obj is a closed file handle, or nil if obj is not a file handle. Closes file . Note that files are automatically closed when their handles are garbage collected, but that takes an unpredictable amount of the bull calf, time to happen. When closing a file handle created with io.popen , file:close returns the same values returned by essay literature os.execute . Saves any written data to file . Returns an iterator function that, each time it is phrase modifiers, called, reads the essay definition, file according to the given formats. When no format is given, uses *l as a default. As an traditions example, the construction. will iterate over all characters of the file, starting at the current position. Essay Definition? Unlike io.lines , this function does not close the file when the loop ends. In case of errors this function raises the error, instead of returning an error code.
Reads the file file , according to the given formats, which specify what to read. For each format, the function returns a string (or a number) with the characters read, or nil if it cannot read data with the Benzoin Essay, specified format. When called without formats, it uses a default format that reads the next line (see below). The available formats are *n : reads a number; this is the only format that returns a number instead of a string. *a : reads the whole file, starting at the current position. On end of file, it returns the empty string. Definition? *l : reads the next line skipping the end of line, returning nil on end of file.
This is the default format. *L : reads the next line keeping the end of line (if present), returning nil on ancient greek wedding, end of file. Essay Definition Literature? number : reads a string with up to this number of bytes, returning nil on end of file. If number is phrase, zero, it reads nothing and returns an empty string, or nil on end of file. Sets and gets the file position, measured from the beginning of the file, to the position given by offset plus a base specified by the string whence , as follows: set : base is position 0 (beginning of the file); cur : base is current position; end : base is essay definition, end of file; In case of success, seek returns the final file position, measured in Benzoin Tree, bytes from the beginning of the file. If seek fails, it returns nil , plus a string describing the error. The default value for whence is cur , and for essay definition, offset is phrase, 0. Therefore, the call file:seek() returns the current file position, without changing it; the call file:seek(set) sets the position to the beginning of the file (and returns 0); and literature, the call file:seek(end) sets the position to the end of the greek hades, file, and returns its size. Sets the essay definition, buffering mode for an output file. Essay About Social? There are three available modes: no : no buffering; the result of any output operation appears immediately. full : full buffering; output operation is performed only when the buffer is full or when you explicitly flush the file (see io.flush ). line : line buffering; output is buffered until a newline is essay, output or there is traditions, any input from essay some special files (such as a terminal device). For the last two cases, size specifies the ancient greek, size of the buffer, in bytes. Definition? The default is an appropriate size. Writes the value of each of its arguments to file . About Opportunities? The arguments must be strings or numbers.
In case of success, this function returns file . Otherwise it returns nil plus a string describing the error. This library is implemented through table os . Returns an approximation of the amount in seconds of essay literature, CPU time used by the program. Returns a string or a table containing date and time, formatted according to the given string format . If the time argument is present, this is the time to be formatted (see the os.time function for a description of this value). Otherwise, date formats the current time. If format starts with ' ! ', then the date is Benzoin, formatted in Coordinated Universal Time. Essay? After this optional character, if format is the string *t , then date returns a table with the greek hades, following fields: year (four digits), month (112), day (131), hour (023), min (059), sec (061), wday (weekday, Sunday is 1), yday (day of the year), and isdst (daylight saving flag, a boolean). This last field may be absent if the information is not available. If format is not *t , then date returns the date as a string, formatted according to the same rules as the ISO C function strftime . When called without arguments, date returns a reasonable date and definition literature, time representation that depends on the host system and on the current locale (that is, os.date() is equivalent to os.date(%c) ). On non-Posix systems, this function may be not thread safe because of wedding, its reliance on C function gmtime and C function localtime . Returns the number of seconds from time t1 to time t2 . In POSIX, Windows, and some other systems, this value is exactly t2 - t1 . This function is equivalent to the ISO C function system . It passes command to be executed by an operating system shell. Its first result is true if the command terminated successfully, or nil otherwise. Essay Definition? After this first result the function returns a string and a number, as follows: exit : the command terminated normally; the following number is the exit status of the the middle merchants,, command. Essay? signal : the command was terminated by a signal; the following number is the signal that terminated the command.
When called without a command , os.execute returns a boolean that is true if a shell is available. Calls the greek traditions, ISO C function exit to terminate the host program. If code is true , the returned status is EXIT_SUCCESS ; if code is definition literature, false , the returned status is EXIT_FAILURE ; if code is during ages, artisans, and their contributed to the, a number, the returned status is this number. The default value for code is essay definition literature, true . If the optional second argument close is true, closes the Lua state before exiting. Returns the value of the process environment variable varname , or nil if the variable is Media, not defined. Deletes the file (or empty directory, on POSIX systems) with the given name. If this function fails, it returns nil , plus a string describing the error and the error code.
Renames file or directory named oldname to newname . If this function fails, it returns nil , plus a string describing the error and the error code. Sets the current locale of the program. locale is a system-dependent string specifying a locale; category is an optional string describing which category to change: all , collate , ctype , monetary , numeric , or time ; the default category is all . The function returns the essay literature, name of the new locale, or nil if the greek traditions, request cannot be honored. If locale is the empty string, the current locale is set to an implementation-defined native locale. If locale is the string C , the current locale is set to the standard C locale. When called with nil as the first argument, this function only returns the name of the essay definition, current locale for the given category.
This function may be not thread safe because of the middle ages, merchants,, its reliance on C function setlocale . Returns the current time when called without arguments, or a time representing the date and time specified by the given table. This table must have fields year , month , and day , and may have fields hour (default is 12), min (default is 0), sec (default is 0), and definition literature, isdst (default is nil ). For a description of these fields, see the greek hades, os.date function. The returned value is essay literature, a number, whose meaning depends on your system. In POSIX, Windows, and some other systems, this number counts the number of seconds since some given start time (the epoch). In other systems, the the bull calf, meaning is not specified, and definition, the number returned by time can be used only as an argument to os.date and os.difftime . Returns a string with a file name that can be used for ages, merchants, and their contributed, a temporary file. The file must be explicitly opened before its use and explicitly removed when no longer needed. On POSIX systems, this function also creates a file with that name, to avoid security risks. (Someone else might create the file with wrong permissions in the time between getting the definition, name and greek hades, creating the file.) You still have to open the file to use it and to essay, remove it (even if you do not use it). When possible, you may prefer to use io.tmpfile , which automatically removes the file when the program ends.
This library provides the during ages, merchants, and their contributed to the, functionality of the debug interface (§4.9) to Lua programs. You should exert care when using this library. Several of its functions violate basic assumptions about Lua code (e.g., that variables local to a function cannot be accessed from outside; that userdata metatables cannot be changed by Lua code; that Lua programs do not crash) and therefore can compromise otherwise secure code. Moreover, some functions in definition literature, this library may be slow. All functions in this library are provided inside the debug table. All functions that operate over a thread have an optional first argument which is the thread to operate over. The default is always the during the middle ages, and their to the, current thread. Enters an interactive mode with the essay literature, user, running each string that the user enters. Using simple commands and other debug facilities, the user can inspect global and local variables, change their values, evaluate expressions, and so on. A line containing only the word cont finishes this function, so that the caller continues its execution. Note that commands for debug.debug are not lexically nested within any function and so have no direct access to local variables.
Returns the current hook settings of the thread, as three values: the current hook function, the current hook mask, and the current hook count (as set by Marketing the debug.sethook function). Returns a table with information about definition a function. You can give the function directly or you can give a number as the The Gum Benzoin Tree Essay, value of f , which means the function running at literature level f of the Tree Essay, call stack of the given thread: level 0 is the current function ( getinfo itself); level 1 is the function that called getinfo (except for tail calls, which do not count on the stack); and essay literature, so on. If f is a number larger than the number of active functions, then getinfo returns nil . The returned table can contain all the fields returned by lua_getinfo , with the string what describing which fields to fill in. The default for what is to get all information available, except the table of valid lines. If present, the greek wedding traditions, option ' f ' adds a field named func with the function itself. If present, the definition literature, option ' L ' adds a field named activelines with the table of valid lines.
For instance, the expression debug.getinfo(1,n).name returns a table with a name for greek hades, the current function, if a reasonable name can be found, and essay definition literature, the expression debug.getinfo(print) returns a table with all available information about the print function. This function returns the name and the value of the local variable with index local of the function at level f of the ancient greek wedding, stack. Literature? This function accesses not only explicit local variables, but also parameters, temporaries, etc. The first parameter or local variable has index 1, and so on, until the last active variable. Negative indices refer to ancient wedding traditions, vararg parameters; -1 is the first vararg parameter.
The function returns nil if there is no variable with the given index, and raises an error when called with a level out of range. Essay Literature? (You can call debug.getinfo to check whether the level is valid.) Variable names starting with ' ( ' (open parenthesis) represent internal variables (loop control variables, temporaries, varargs, and C function locals). The parameter f may also be a function. In that case, getlocal returns only the name of modifiers, function parameters. Returns the metatable of the given value or nil if it does not have a metatable. Returns the registry table (see §4.5). This function returns the name and the value of the upvalue with index up of the function f . Definition? The function returns nil if there is no upvalue with the given index. Returns the Lua value associated to u . If u is not a userdata, returns nil . debug.sethook ([thread,] hook, mask [, count])
Sets the greek hades, given function as a hook. The string mask and the number count describe when the hook will be called. The string mask may have any combination of the following characters, with the given meaning: ' c ': the hook is definition, called every time Lua calls a function; ' r ': the the bull calf, hook is called every time Lua returns from a function; ' l ': the hook is literature, called every time Lua enters a new line of code. Moreover, with a count different from zero, the hook is called also after every count instructions. When called without arguments, debug.sethook turns off the hook. When the hook is greek wedding, called, its first parameter is essay, a string describing the event that has triggered its call: call (or tail call ), return , line , and count . For line events, the hook also gets the new line number as its second parameter. Inside a hook, you can call getinfo with level 2 to the middle ages, merchants, contributed, get more information about the definition, running function (level 0 is the getinfo function, and level 1 is the phrase, hook function). debug.setlocal ([thread,] level, local, value)
This function assigns the value value to the local variable with index local of the function at level level of the essay definition, stack. The function returns nil if there is Essay Social Marketing Opportunities, no local variable with the given index, and raises an error when called with a level out of range. (You can call getinfo to check whether the level is valid.) Otherwise, it returns the name of the local variable. See debug.getlocal for more information about variable indices and essay definition literature, names. Sets the greek hades, metatable for the given value to the given table (which can be nil ). Essay Definition? Returns value . This function assigns the value value to during merchants, and their guilds to the, the upvalue with index up of the function f . Definition? The function returns nil if there is no upvalue with the Social Opportunities, given index. Definition Literature? Otherwise, it returns the name of the upvalue. Sets the given value as the Lua value associated to the given udata . value must be a table or nil ; udata must be a full userdata. debug.traceback ([thread,] [message [, level]]) If message is present but is neither a string nor nil , this function returns message without further processing. Otherwise, it returns a string with a traceback of the call stack. An optional message string is appended at the beginning of the wedding, traceback. An optional level number tells at essay definition literature which level to start the traceback (default is 1, the function calling traceback ).
Returns an greek hades unique identifier (as a light userdata) for the upvalue numbered n from the definition literature, given function. These unique identifiers allow a program to check whether different closures share upvalues. Lua closures that share an upvalue (that is, that access a same external local variable) will return identical ids for those upvalue indices. Make the during the middle ages, artisans, and their, n1 -th upvalue of the Lua closure f1 refer to the n2 -th upvalue of the Lua closure f2 . Although Lua has been designed as an extension language, to be embedded in a host C program, it is also frequently used as a standalone language. An interpreter for Lua as a standalone language, called simply lua , is provided with the standard distribution. Essay Definition? The standalone interpreter includes all standard libraries, including the debug library. Its usage is: The options are: -e stat : executes string stat ; -l mod : requires mod ; -i : enters interactive mode after running script ; -v : prints version information; -E : ignores environment variables; -- : stops handling options; - : executes stdin as a file and stops handling options. After handling its options, lua runs the given script , passing to it the given args as string arguments.
When called without arguments, lua behaves as lua -v -i when the standard input ( stdin ) is a terminal, and as lua - otherwise. When called without option -E , the interpreter checks for an environment variable LUA_INIT_5_2 (or LUA_INIT if it is not defined) before running any argument. If the variable content has the format @ filename , then lua executes the file. The Middle Ages, Merchants, And Their Guilds? Otherwise, lua executes the string itself. When called with option -E , besides ignoring LUA_INIT , Lua also ignores the values of LUA_PATH and LUA_CPATH , setting the values of literature, package.path and package.cpath with the default paths defined in luaconf.h . All options are handled in order, except -i and -E . For instance, an invocation like. will first set a to 1, then print the value of a , and finally run the file script.lua with no arguments. (Here $ is the shell prompt. Your prompt may be different.) Before starting to run the script, lua collects all arguments in the command line in a global table called arg . The script name is stored at greek hades index 0, the essay, first argument after the script name goes to index 1, and so on. Greek Hades? Any arguments before the script name (that is, the interpreter name plus the options) go to negative indices. For instance, in essay definition, the call. the interpreter first runs the file a.lua , then creates a table.
and finally runs the file b.lua . The script is called with arg , arg , . as arguments; it can also access these arguments with the the bull calf, vararg expression ' . Essay Definition Literature? '. In interactive mode, if you write an incomplete statement, the interpreter waits for its completion by issuing a different prompt. In case of unprotected errors in the script, the interpreter reports the error to the standard error stream. If the error object is a string, the interpreter adds a stack traceback to it. Otherwise, if the greek traditions, error object has a metamethod __tostring , the interpreter calls this metamethod to produce the final message.
Finally, if the error object is nil , the interpreter does not report the error. When finishing normally, the interpreter closes its main Lua state (see lua_close ). The script can avoid this step by calling os.exit to terminate. To allow the use of Lua as a script interpreter in Unix systems, the standalone interpreter skips the first line of a chunk if it starts with # . Literature? Therefore, Lua scripts can be made into The Gum Benzoin Essay, executable programs by using chmod +x and the #! form, as in. (Of course, the location of the Lua interpreter may be different in your machine. If lua is in essay, your PATH , then.
is a more portable solution.) 8 Incompatibilities with the Previous Version. Here we list the incompatibilities that you may find when moving a program from Lua 5.1 to Lua 5.2. Tree? You can avoid some incompatibilities by compiling Lua with appropriate options (see file luaconf.h ). However, all these compatibility options will be removed in the next version of Lua. Similarly, all features marked as deprecated in Lua 5.1 have been removed in literature, Lua 5.2. The concept of environment changed. Only Lua functions have environments. To set the greek hades, environment of a Lua function, use the variable _ENV or the definition literature, function load . C functions no longer have environments.
Use an upvalue with a shared table if you need to keep shared state among several C functions. (You may use luaL_setfuncs to open a C library with all functions sharing a common upvalue.) To manipulate the environment of the middle merchants, guilds, a userdata (which is now called user value), use the new functions lua_getuservalue and lua_setuservalue . Lua identifiers cannot use locale-dependent letters. Doing a step or a full collection in the garbage collector does not restart the collector if it has been stopped. Weak tables with weak keys now perform like ephemeron tables . The event tail return in debug hooks was removed. Essay Definition Literature? Instead, tail calls generate a special new event, tail call , so that the debugger can know that there will not be a corresponding return event. Equality between function values has changed. Now, a function definition may not create a new value; it may reuse some previous value if there is no observable difference to the new function. Function module is deprecated. It is easy to set up a module with regular Lua code. During Merchants, And Their Guilds Contributed To The? Modules are not expected to essay, set global variables.
Functions setfenv and getfenv were removed, because of the changes in environments. Function math.log10 is deprecated. Use math.log with 10 as its second argument, instead. Function loadstring is Essay Social Marketing Opportunities, deprecated. Use load instead; it now accepts string arguments and literature, are exactly equivalent to loadstring . Function table.maxn is deprecated. Write it in Lua if you really need it. Function os.execute now returns true when command terminates successfully and nil plus error information otherwise.
Function unpack was moved into the table library and phrase modifiers, therefore must be called as table.unpack . Essay Literature? Character class %z in patterns is deprecated, as now patterns may contain ' 0 ' as a regular character. The table package.loaders was renamed package.searchers . Lua does not have bytecode verification anymore. So, all functions that load code ( load and loadfile ) are potentially insecure when loading untrusted binary data. (Actually, those functions were already insecure because of flaws in greek hades, the verification algorithm.) When in doubt, use the mode argument of those functions to essay, restrict them to loading textual chunks. The standard paths in the official distribution may change between versions. Pseudoindex LUA_GLOBALSINDEX was removed. You must get the global environment from the registry (see §4.5).
Pseudoindex LUA_ENVIRONINDEX and functions lua_getfenv / lua_setfenv were removed, as C functions no longer have environments. Function luaL_register is deprecated. Use luaL_setfuncs so that your module does not create globals. Modifiers? (Modules are not expected to set global variables anymore.) The osize argument to the allocation function may not be zero when creating a new block, that is, when ptr is NULL (see lua_Alloc ). Literature? Use only the the middle ages, contributed to the, test ptr == NULL to essay definition, check whether the block is new. Finalizers ( __gc metamethods) for The Gum Benzoin Essay, userdata are called in the reverse order that they were marked for finalization, not that they were created (see §2.5.1). (Most userdata are marked immediately after they are created.) Moreover, if the metatable does not have a __gc field when set, the finalizer will not be called, even if it is set later. luaL_typerror was removed. Definition Literature? Write your own version if you need it. Function lua_cpcall is deprecated.
You can simply push the function with lua_pushcfunction and Benzoin Tree, call it with lua_pcall . Essay Literature? Functions lua_equal and lua_lessthan are deprecated. Use the new lua_compare with appropriate options instead. The Bull Calf? Function lua_objlen was renamed lua_rawlen . Definition? Function lua_load has an greek hades extra parameter, mode . Pass NULL to simulate the literature, old behavior. Function lua_resume has an extra parameter, from . Pass NULL or the thread doing the call. Here is the greek hades, complete syntax of Lua in extended BNF. (It does not describe operator precedences.)
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The McCain Doctrines - John McCain - Iraq - Profile. Whatever their disagreements on policy, United States senators, even in today’s hyperpolitical climate, are reluctant to impugn one another’s motives or integrity. That’s doubly true among those who experienced combat in the Vietnam War, a group that now includes four sitting senators — the Republicans John McCain and Chuck Hagel and essay definition, the Democrats John Kerry and Jim Webb — as well as former colleagues like Bob Kerrey, Max Cleland and Chuck Robb. These men share an obvious bond, and over the years they have more readily crossed partisan lines than other senators, constituting, in some ways, a party unto themselves. To outsiders, they give the impression of having seen things in their youth that confer a different kind of perspective on mere politics; they seem to know that there are worse things in phrase modifiers, life than losing an definition literature election and phrase modifiers, having to go home. In contrast to the insecurities of the many boomer politicians who avoided service in Vietnam or marched against it, the Senate’s former soldiers exude a confidence that goes beyond military matters. The war in Iraq has tested some of these friendships, however.
Last year, after House Democrats voted to essay literature set a timetable for withdrawal from Iraq, McCain and Webb — both of The Gum Essay whom were featured heroes in a classic book on the era, Robert Timberg’s “Nightingale’s Song” — became embroiled in an unusually public disagreement. After McCain pointedly said the enemy in Iraq was celebrating along with Democrats, Webb accused him of unfairly questioning other people’s patriotism. When Webb and essay definition literature, Hagel (a close personal friend of McCain’s) proposed a bill to give troops leaving Iraq and Afghanistan more time at home before redeploying, McCain, whose 19-year-old son has served with the Marines in Iraq, forcefully opposed them, saying the troops were needed in the theater. More recently, McCain has found himself on the opposite side of Webb and Hagel again, this time over their “G.I. bill” that would offer education money to every returning veteran. McCain and others want a more limited bill that would encourage rank-and-file soldiers to re-enlist rather than return to civilian life. In these skirmishes, McCain is the the bull calf outlier. Among his fellow combat veterans in the Senate, past and present, he is the only one who has continued to champion the war in Iraq; by contrast, Kerry, Webb and Hagel have emerged in the years since the invasion as unsparing critics of essay literature American involvement there. (In a new book, Hagel, who voiced deep concerns about Iraq even as he voted for the war resolution in 2002, predicts that the war will turn out to be “the most dangerous and costly foreign-policy debacle in our nation’s history.”) This divide among old allies may be the inevitable result of a protracted war that has cleaved plenty of American households and friendships. But it may also be that the war is revealing underlying fractures among the Senate’s Vietnam coalition. There is a feeling among some of McCain’s fellow veterans that his break with them on Iraq can be traced, at least partly, to his markedly different experience in Vietnam. McCain’s comrades in the Senate will not talk about ancient greek this publicly.
They are wary of seeming to definition denigrate McCain’s service, marked by his legendary endurance in a Hanoi prison camp, when in fact they remain, to this day, in awe of it. And yet in private discussions with friends and colleagues, some of them have pointed out The Gum Tree that McCain, who was shot down and definition, captured in 1967, spent the worst and most costly years of the war sealed away, both from the rice paddies of Indochina and the bull calf, from the definition outside world. During those years, McCain did not share the disillusioning and morally jarring experiences of Essay Media Opportunities soldiers like Kerry, Webb and definition literature, Hagel, who found themselves unable to recognize their enemy in the bull calf, the confusion of the jungle; he never underwent the conversion that caused Kerry, for literature, one, to toss away some of his war decorations during a protest at the Capitol. Whatever anger McCain felt remained focused on modifiers, his captors, not on his own superiors back in Washington. Not all of McCain’s fellow veterans subscribe to the theory that the singularity of essay definition his war experience has anything to do with his intransigence on Iraq. (Bob Kerrey, for one, told me that while he was aware of Essay Social Marketing Opportunities this argument, he has never believed it.) But some suspect that whatever lesson McCain took away from his time in essay definition literature, Vietnam, it was not the one that stayed with his colleagues who were “in country” during those years — that some wars simply can’t be won on the battlefield, no matter how long you fight them, no matter how many soldiers you send there to die. “McCain is my friend and brother, and I love him dearly,” Max Cleland, Georgia’s former Democratic senator, told me when we talked last month. “But I think you learn something fighting on the ground, like me and John Kerry and Chuck Hagel did in Vietnam. This objective of ‘hearts and wedding traditions, minds’? Well, hello! You didn’t know which heart and mind was going to definition literature blow you up!
“I have seen this movie before, and modifiers, I know how it ends,” says Cleland, who lost three of his limbs to an errant grenade during the battle of Khe Sanh. “With thousands dead and tens of thousands more injured, and literature, years later you ask yourself what you were doing there. To the extent my friend John McCain signs on to this, he is endangering America’s long-term interests, and probably his own election in the fall.” If it is true that McCain’s Vietnam experience left him with a different attitude about Essay about Media Marketing foreign wars from the one held by essay literature those who were on Essay Social, the ground, then it certainly wasn’t apparent earlier in his political career. During the late 1980s and early 1990s, after he arrived in the Senate, McCain was, in fact, an outspoken opponent of American intervention in faraway lands — at least in cases where the country wasn’t willing to lose thousands of lives to achieve its aims. But during the post-cold-war 1990s, as America’s foreign-policy establishment struggled to essay definition define the nation’s obligations to the rest of the world, McCain went through his own kind of Marketing inner journey, seeking some balance between the definition literature legacy of Vietnam and the pull of new crises around the globe — crises born of savagery and rife with human consequence. That journey led him inexorably toward Iraq, where McCain’s resolve hardened to the point that now, as he prepares to run the climactic campaign of his life, he finds himself carrying the weight of another war, one that has divided the country and devastated his party.
One way or the other, Iraq will determine this last phase of McCain’s political life, as surely as the war in Vietnam defined its beginning. WHEN CAPTAIN McCAIN returned home from Hanoi in greek hades, 1973, a grateful Navy gave him and his fellow P.O.W.’s their choice of assignments. McCain rather audaciously chose one normally reserved for higher-ranking officers: study at the prestigious National War College. Definition. The war in Vietnam collapsed during the five-plus years of his imprisonment, and McCain needed to greek hades understand what happened. He absorbed the writings of military historians, most notably Bernard Fall, a veteran of the French resistance who was a sharp critic of the American military in Vietnam. Essay. Fall, who lived (and died) among American troops in greek hades, Vietnam, didn’t quibble with America’s strategic decision to intervene in essay literature, the country, but he did lambaste its tactics: hunting down guerrillas in search-and-destroy patrols, trying to the middle artisans, to the draw the Vietcong into traditional military battles. Fall believed the Americans did not learn from the failure in Indochina of the French, who insisted on fighting a jungle insurgency as if it were the Second World War. In his book, Chuck Hagel writes of definition literature listening to declassified tapes from the mid-1960s in which Lyndon Johnson admitted to advisers that Vietnam probably couldn’t be won but rued that withdrawal would make him the first American president to lose a war. Greek Wedding Traditions. “I wish someone had told me when I was sitting on a burning tank in a Vietnamese rice paddy that I was fighting for literature, a lost cause just to the bull calf save a president’s legacy,” Hagel observes acidly. Although McCain was held and tortured for the same cause, he never saw the situation the way Hagel did.
In his view, the American effort began to turn around with the promotion in essay literature, 1968 of Gen. Creighton Abrams, who adopted the tactics favored by counterinsurgency experts like Fall. Ages, Merchants, Guilds Contributed To The. Abrams pulled back the search-and-destroy teams and instead focused on winning the “hearts and definition literature, minds” of South Vietnamese villagers. His goal was to encourage the South Vietnamese military to during the middle ages, artisans, to the take over their own defense — the process that came to definition be known as “Vietnamization.” McCain maintains that Abrams’s strategy was working, but it was undercut by the fact that, by that point, the American public had already rendered its verdict, and the drawdown of troops continued until the war’s chaotic end. The lesson McCain and other conservatives took away from this version of history is that America was driven from Vietnam principally because the phrase modifiers voters, discouraged by literature dire reports from a skeptical media, lost their will. McCain has said in the bull calf, the past that he felt the war could have been won had the right strategy been followed sooner. When I met with McCain last month for definition, a far-ranging conversation about Vietnam and greek hades, Iraq, I asked him whether he still felt this was the case. “These are all hypotheticals,” he replied. Essay Literature. “But I think that if we had employed the strategy that Creighton Abrams put into effect when he relieved General Westmoreland” — that is, if the Abrams strategy had been used years earlier — “then at least the casualties would have been dramatically different.” As a new congressman in 1983, among the first of his generation of vets to serve in Washington, McCain brought with him an attitude toward American intervention similar to what would later come to be known as the Powell Doctrine, for its author, Colin Powell: simply put, if you were going to use the American military to end a dispute or displace a foreign government, then you had to have the American public firmly on your side and you had to be prepared to use overwhelming force to achieve your aims. Greek. Late that year, when his party’s popular president, Ronald Reagan, proposed to extend the deployment of the Marines in Beirut, McCain was one of just 27 Republican representatives to object.
The soldiers didn’t have a clear mission, McCain said, nor enough numbers to affect the outcome of the conflict. (Ultimately, 241 American servicemen died when a suicide bomber struck the Marine compound there, and American forces were withdrawn.) McCain strongly supported other operations, like the American-led invasion of tiny Grenada in 1983, as well as the first gulf war in 1991. Essay Literature. But his first term in the Senate, which began in 1987, was marked mostly by extreme caution when it came to inserting American troops into foreign wars. As a newly arrived senator serving on the Armed Services Committee, McCain opposed Reagan’s plan to fly the American flag on phrase modifiers, Kuwaiti oil tankers that were coming under fire from Iranian forces in the Persian Gulf. In August 1992, when the Bush administration and its allies were trying to get humanitarian aid to Bosnians caught in a multiethnic civil war, McCain broke with the majority of Republicans and voted against a resolution that authorized “demonstrations of force” in the region; he called it recklessly provocative. After the essay definition ambush in Somalia that claimed the lives of 18 American soldiers in October 1993, a frustrated McCain introduced a resolution to bring the troops home immediately. Bob Dole, a staunch internationalist and phrase modifiers, then the Republican minority leader, persuaded other senators to defeat it. McCAIN’S CRITICS HAVE pointed to this early part of definition literature his political career to Social make the case that he later underwent a radical change in his philosophy, veering from a cautious approach to definition military force to a more hawkish, even bellicose mentality. His own aides, meanwhile, contend that McCain’s philosophy has been entirely constant; they say his opposition to phrase modifiers limited and ill-defined operations like Somalia and definition, Bosnia wasn’t at all inconsistent with his willingness, later, to use overwhelming force against a tyrant like Saddam Hussein. The problem with these narratives is that neither reflects the context of the time.
As two former national security officials in the bull calf, the Clinton administration, Derek Chollet and James Goldgeier, explain compellingly in “America Between the definition Wars,” a book to be published next month, the period between the cold war and the war on terror — the 90s, roughly speaking — was a decade when foreign-policy thinkers across the ideological spectrum were groping about in darkness, trying to feel out the limits of American power and to balance the twin risks of action and inaction. During that time, the United States bounced from one unforeseen crisis to greek hades another, undertaking a military intervention every 18 months, on average — a staggering pace compared with that of the years that came before. Old ideological alliances in Washington were shattered and reformed, as pacifists lined up with conservative isolationists to battle liberal hawks and literature, neoconservatives. New terms — “failed state,” “humanitarian intervention,” “ethnic cleansing” — entered the American lexicon. It’s fair to say, then, that McCain did evolve in his views on when and greek hades, how to use American force over the course of the essay definition literature decade, but it’s misleading to separate his evolution from the larger transformation that was happening all around him. During the cold war, the guiding framework for military intervention was built around a pretty straightforward set of questions: were American forces needed to stop the expansion of ancient Soviet ideology or territory, and if so, were the potential casualties worth the risk? When the Berlin Wall came down in 1989, however, that framework disappeared almost overnight. Ecstatic policy makers slashed the size of the military and hoped for a “peace dividend.” In a famous article in 1989, Francis Fukuyama posited that we were witnessing “the end of history”; from that time forward, the theory went, mankind would drift inexorably away from totalitarianism toward individual freedom and democracy. Essay Definition Literature. Fukuyama didn’t actually advocate that the United States retreat from its assertive global role, but that’s what many in Washington — and the bull calf, especially conservatives — chose to hear. The long war was over, and America could now focus on definition literature, defending its own borders, using technologies like missile defense, rather than sending its soldiers abroad to “police the ancient wedding world.”
McCain explicitly rejected this idea, and yet he wasn’t eager to commit American troops to humanitarian missions that could easily turn into military nightmares like Somalia. For him, as for others, the defining dilemma of this new terrain was Bosnia. In July 1995, after years of debate in Washington about how to stop Serbian forces from definition literature, wiping out the Bosnian Muslims, the Serbs overran the greek hades town of Srebrenica and, while Dutch peacekeepers stood by, mowed down thousands of Muslim boys and men. Coming not long after the mass killings in Rwanda, the slaughter in definition, Srebrenica again brought the the middle ages, merchants, artisans, and their guilds moral implications of essay literature inaction home to American politicians — especially those who, like McCain, previously opposed armed intervention. NATO responded with a series of airstrikes against Bosnian Serbs, which ultimately pushed the Serbian president, Slobodan Milosevic, to negotiate a settlement to the war. Clinton then urged Congress to approve the deployment of 20,000 American troops to help enforce the agreement. At the time, McCain was supporting the presidential campaign of his friend Phil Gramm, who was running against Dole in the Republican primaries. Gramm opposed the intervention, and he pleaded with McCain to stand by him; instead, this time, McCain decided to Essay Media Marketing partner with Dole to ensure passage of the supporting resolution, stifling significant Republican opposition. It was a turning point, both for McCain and essay definition, American consensus as a whole. “The Bosnian intervention was life-changing for a lot of people,” Bob Kerrey told me. “It caused even some liberals to go from opposing intervention to supporting it.” Throughout the late ’90s, McCain criticized what he called Clinton’s “feckless photo-op foreign policy,” but he also emerged as an important bulwark for the administration against modifiers, Republicans who reflexively opposed Clinton’s every move as commander in chief. McCain strongly supported airstrikes against Sudan and definition literature, Afghanistan, in retaliation for the middle ages, merchants,, terrorist attacks on two American Embassies, and against Iraq, where Saddam Hussein was obstructing weapons inspectors.
In 1999, McCain took the definition lead in the bull calf, supporting the bombing of literature Serbia to prevent another genocide in Kosovo. Greek Hades. His tone had changed considerably since the days before Srebrenica. Essay Literature. “Our interests and values converge clearly here,” McCain said in a speech from the Senate floor. “It seems clear to me that Milosevic knows no limits to Essay about Opportunities his inhumanity and will keep slaughtering until even the most determined opponent of American involvement in this conflict is convinced to drop that opposition.” By the essay literature time McCain ran for president in 2000, he was the one arguing in greek hades, debates for essay definition, a more robust military presence in humanitarian crises, while George W. Bush forswore “nation building” and vowed a more “humble” foreign policy. During that campaign, McCain introduced the closest thing he had found to a doctrine for foreign intervention: the Essay about Opportunities “rogue-state rollback,” under which he proposed arming and definition literature, training internal forces that might ultimately overthrow menacing regimes in countries like Iraq, Iran and North Korea. McCain’s more ambitious view of American power made him a natural ally of neoconservative thinkers like William Kristol, the editor of the fledgling Weekly Standard (now a New York Times columnist), and greek hades, Robert Kagan of the Carnegie Endowment for International Peace. Essay Definition Literature. Empowered during the Reagan era, the neocons were largely shoved aside during the ’90s by the more isolationist, anti-Clinton voices who dominated Republican politics. By the during merchants, and their contributed to the time McCain expanded his circle of essay influence to include Kristol and other neocons in the late ’90s, they had rallied around a single unifying cause: the overthrow of Saddam Hussein. Greek Hades. In 1998, McCain was one of the sponsors of the Iraq Liberation Act, signed into law by Bill Clinton, which officially changed American policy from containing Hussein to deposing him, and he became a leading figure in the Committee for the Liberation of Iraq, a lobbying group founded by Randy Scheunemann, who is now his chief foreign policy adviser. McCain met with Ahmad Chalabi, the smooth Iraqi dissident who was a favorite of the neocons, and supported him publicly. After the literature terrorist attacks of 2001 and Essay about Social Marketing Opportunities, the sudden elevation of Al Qaeda as a defining national security threat, McCain never had any doubt that Iraq, with its supposed capability to unleash or share weapons of mass destruction, posed an existential threat to the United States. Definition. Reading his statements from the time, there is no indication that he ever judged the invasion of Iraq by the standard he had used earlier in his career — whether it had the potential to become another Vietnam.
Instead, as American troops swarmed Baghdad, McCain repeatedly compared Hussein to Adolf Hitler and predicted that the occupation of Iraq would be remembered in much the same way that history celebrated the Social Media Marketing liberation and rebuilding of Europe and Japan. I ARRANGED TO TALK with McCain during the last week of April, before a fund-raising event at the Grand Hyatt hotel in essay literature, Tampa. When he strode, an hour late, into the conference room his campaign had reserved, his gait was rushed and purposeful and his manner decidedly businesslike. Having survived the sadism of the Vietcong and, more recently, skin cancer, McCain these days shows the wear of his 71 years. His face is more topographically interesting than it was when he first ran for president eight years ago, the skin folding into small craters and valleys as it runs into his neckline. His eyes look warier and less mischievous than they did back then. You can imagine, looking at him, how McCain spent much of these last few years: beseeching and indulging Republican power brokers, many of whom he does not like, all the while tolerating their lectures, bridling his infamous temper, keeping the irritation pent up. About Social Media Marketing Opportunities. Perhaps repression exacts its cost. McCain (lower right) with his squadron in 1965. Library of Congress.
Sitting down at the end of a long granite table, he greeted me warmly, and definition, then, before I could ask a question or even introduce the subject at hand, he dove headlong into a five-minute soliloquy. The Bull Calf. He told me that he had just driven in from the essay definition literature airport on Eisenhower Boulevard, and that Eisenhower was a man he very much admired, because Eisenhower understood the costs of war and strove to keep America out of it. He then made reference to a “rather hysterical” column by Fareed Zakaria in that morning’s Washington Post about McCain’s views on greek wedding, foreign policy. His voice was tight and measured. “I’ve seen other stories and I’ve seen comments about my national-security speech,” McCain said, referring to an address he gave in Los Angeles a few weeks earlier. “The story line is as follows: ‘McCain’s not the same McCain. Essay. He’s changed, and now he’s become a hawk, and during the middle artisans, to the, he is dramatically different from what he was.’ ” He recited this narrative as if repeating the nonsensical words of dullards. “And anybody is free to write whatever they want and form whatever opinions they want to form. But facts are facts.
And the fact is that I know war, and I know the tragedy of essay war. And no one hates war more than veterans.” From here, McCain went on to list for me some of the greek hades military actions he supported (Grenada, Panama) and some that he opposed (Beirut, Somalia). He had always followed the essay definition literature same set of greek hades values, he said, grounded in the premise that all people, not just Americans, were created equal and had inalienable rights. And when America could intervene militarily to essay literature further those values around the world without needless sacrifice in lives and money, he was all for it, and where we couldn’t, he was not, and there was nothing extreme about that. “As far as people who advise me,” McCain went on, though I still hadn’t asked a question, “probably one of my most trusted advisers for the last 30 years is Henry Kissinger, not known as a hawk or a neocon .” McCain infused the word with sarcasm. “I also remember the days when Ronald Reagan was portrayed as a hawk and a neocon. I remember the near hysteria in response to his ‘tear down this wall.’ I remember the ‘Oh, you can’t do that, when you call the Soviets an Benzoin Essay evil empire.’ I remember all those things. Same people who are now saying — ” He stopped himself midsentence, then began again. “I’m always open to new ideas and new thoughts, but my principles were grounded many years ago in definition, places like the National War College and other places where I have learned and studied and Benzoin Tree Essay, talked to people I admire and respect. “So,” McCain said finally, “with that preface, I’d be glad to answer any questions you might have, and again, it’s always good to essay be with you.” It’s rare to Essay about Media Opportunities see a presidential candidate vent in quite this way, but clearly some of the criticism over definition his policies on greek hades, Iraq and definition, foreign policy in general — mild criticism, to the middle and their guilds contributed to the this point — had wounded McCain.
When he looks in the mirror, he does not see a reckless or belligerent leader, and yet that was the literature man his detractors claimed to see. The Bull Calf. A few weeks earlier, the liberal radio host Ed Schultz made headlines by calling McCain a “warmonger” and then happily repeating the charge on CNN. As McCain and I talked, the essay definition Democratic National Committee had begun broadcasting an ad that repeatedly showed him saying at Essay Social Media a New Hampshire campaign event that he would be fine with keeping American troops in essay literature, Iraq for during the middle ages, and their guilds contributed to the, 100 years. Literature. The quote had been ripped out of context — he went on to say that such a troop presence would be possible only without casualties, in greek hades, the same way that American soldiers had remained quietly for essay definition, decades in Benzoin Tree, South Korea and Europe — but it had already become a staple of Democratic attacks, and McCain could expect to see it about half a million more times before November. McCain’s major Los Angeles address seemed to have been written in essay literature, part to greek hades reverse this perception. The speech began with McCain’s hatred of war, then moved on to stress his commitment to multilateralism and to ending global warming. McCain called, again, for a “League of Democracies” to essay literature foster cooperation among free nations. Only in the final minutes did he get around to even mentioning Iraq.
Clearly, the campaign was starting to worry about McCain being Reaganized in this way — that is, of having the fall campaign become a referendum on whether he was stable and rational enough to be trusted with the nation’s nuclear codes. McCain described himself, in that speech and in his preamble to Essay our interview, as a “realistic idealist” — a phrase meant to bridge a divide inside his party. While there haven’t really been neat camps into which you can divide Republicans in the post-cold-war era, some rough labels did emerge throughout the ’90s. On one extreme were the definition isolationists, led most noisily by Pat Buchanan, who essentially believed that the end of the cold war should also have meant the end of America’s military involvement in ancient, distant lands. In the definition middle were the group known as realists, who were willing to use force, but only where the country’s vital strategic interests were at stake and where an international consensus could be forged. The realists identified with leaders like Kissinger and greek hades, James Baker, the former secretary of essay literature state, who famously declared of Bosnia, “We do not have a dog in about Social Opportunities, that fight.” And then, on the other end of the spectrum, you had the essay definition literature idealists, including most of those known as neocons. The idealists believed that American force could and should be used to promote American values abroad, whether or not the countries involved posed an immediate danger to national security and about Marketing, whether or not the rest of the world agreed. McCain has never been confused for an isolationist, but neither can he be confined to either of the definition other factions. One reason is temperamental; McCain just doesn’t like labels, and he isn’t very good at sticking to orthodoxies — a personality quirk he has tried hard to control during the campaign. “He’s not a guy who drinks Kool-Aid easily,” says Gary Hart, the former Democratic senator who was once close enough to McCain to have been a groomsman in his wedding. “He’s suspicious of any group who sees the world that simply.” Lorne Craner, a foreign-policy thinker who worked for McCain in the House and Senate in the 1980s, told me that McCain had a standing rule in his office then. All meetings were to be limited to half an hour, unless they were with either of greek hades two advisers: Jeane Kirkpatrick, the Reaganite idealist, or Brent Scowcroft, the essay definition former general who was a leader in the realist wing.
McCain loved to hear from both of greek traditions them at length. It’s clear, though, that on the continuum that separates realists from definition, idealists, McCain sits much closer to the idealist perspective. McCain has long been chairman of the The Gum Essay International Republican Institute, run by Craner, which exists to promote democratic reforms in essay, closed societies. He makes a point of meeting with dissidents when he visits countries like Georgia and Uzbekistan and has championed the cause of Aung San Suu Kyi, the imprisoned leader of the Burmese resistance. Ancient. Most important, as he made clear in his preamble to our interview, McCain considers national values, and not strategic interests, to definition literature be the guiding force in foreign policy. America exists, in McCain’s view, not simply to safeguard the prosperity and safety of those who live in phrase modifiers, it but also to spread democratic values and human rights to other parts of the planet. McCain argues that his brand of idealism is actually more pragmatic in a post-9/11 world than the hard realism of the cold war. He rejects as outdated, for instance, a basic proposition of cold-war realists like Kissinger and Baker: that stability is always found in the relationship between states. Realists have long presumed that the country’s security is defined by essay definition the stability of its alliances with the governments of Benzoin Tree Essay other countries, even if those governments are odious; by definition literature this thinking, your interests can sometimes be served by befriending leaders who share none of your democratic values.
McCain, by contrast, maintains that in a world where oppressive governments can produce fertile ground for the bull calf, rogue groups like Al Qaeda to recruit and prosper, forging bonds with tyrannical regimes is often more likely to harm American interests than to help them. As we spoke in Tampa, I asked McCain if it was true, as his friend Joe Lieberman and essay, others suggested to the bull calf me, that he had been brought to essay literature a more idealist way of thinking partly by the bull calf the genocides in Rwanda and essay definition literature, Srebrenica. Essay About Social Media. “I think so, I think so,” he said, nodding. “And Darfur today. I feel strongly about Darfur, and yet, and this is where the essay definition realist side comes in, how do we effectively stop the Benzoin Essay genocide in definition, Darfur?” He seemed to be genuinely wrestling with the question. “You know the complications with a place that’s bigger, I guess, than the size of traditions Texas, and it’s hard to know who the Janjaweed is, who are the killers, who are the victims. It’s all jumbled up. Coming Home: The former P.O.W. arriving in Washington after five years in captivity, 1973, just after President Nixon negotiated the short-lived Paris Peace Accords. “So I’ve always tried to make a case for the realist side,” he continued. “And I think it was pretty clear that in Kosovo, we could probably benefit the situation fairly effectively and fairly quickly. And yet I look at Darfur, and I still look at Rwanda, to essay definition some degree, and think, How could we have gone in there and stopped that slaughter?”
McCain is known for being a gut thinker, averse to overarching doctrines or theory. But as we talked, I tried to draw out of him some template for phrase, knowing when military intervention made sense — an answer, essentially, to the question that has plagued policy makers confronting international crises for the last 20 years. Definition. McCain has said that the invasion of Iraq was justified, even absent the greek hades weapons of mass destruction he believed were there, because of Hussein’s affront to basic human values. Why then, I asked McCain, shouldn’t we go into Zimbabwe, where, according to that morning’s paper, allies of the despotic president, Robert Mugabe, were rounding up his political opponents and preparing to subvert the definition literature results of the country’s recent national election? How about Tree Essay sending soldiers into Myanmar, formerly Burma, where Aung San Suu Kyi remained under house arrest by a military junta? “I think in definition, the case of Zimbabwe, it’s because of our history in Africa,” McCain said thoughtfully. Greek Hades. “Not so much the United States but the essay definition literature Europeans, the colonialist history in Africa. The government of South Africa has obviously not been effective, to say the least, in trying to greek hades affect the situation in literature, Zimbabwe, and one reason is about, that they don’t want to literature be tarred with the greek hades brush of definition modern colonialism.
So that’s a problem I think we will continue to have on the continent of Africa. If you send in Western military forces, then you risk the backlash from the The Gum Tree people, from the legacy that was left in Africa because of the era of colonialism.” The United States faced a similar obstacle in Myanmar, McCain went on, shaking his head sadly. Literature. “First of all, you’d have to phrase gauge the opinion of the people over definition literature time, whether you’d be greeted as liberators or as occupiers,” McCain said. “I would be concerned about the possibility that if it were mishandled, we might see an insurgent movement.” He talked a bit about the bull calf Aung San Suu Kyi, whom he called “one of the great figures of the 20th century,” but then wondered aloud if the American public would support a military intervention. “It goes back to the Vietnam thing,” McCain told me. “I’m just not sure the essay literature American people would support a military engagement in Tree, Burma, no matter how justified the cause. And I can’t tell you exactly when it would be over. And I can’t tell you exactly what the essay reaction of the people there would be.” Most American politicians, of course, would immediately dismiss the Opportunities idea of sending the military into Zimbabwe or Myanmar as tangential to American interests and therefore impossible to definition justify. McCain didn’t make this argument.
He seemed to start from the bull calf, a default position that moral reasons alone could justify the use of American force, and from there he considered the reasons it might not be feasible to do so. In other words, to paraphrase Robert Kennedy, while most politicians looked at injustice in a foreign land and asked, “Why intervene?” McCain seemed to look at that same injustice and ask himself, “Why not?” “I think we’ve learned some lessons,” McCain told me. “One is that the American people have to be willing to essay literature support it. But two, we need to work more in Essay Media, an international way to try to beneficially affect the situation. And you have to essay definition literature convince America and the world that every single avenue has been exhausted before we go in militarily. And we better think not a day later or a week later, but a year and greek, 5 years and 10 years later. Essay. Because the during the middle ages, artisans, guilds contributed attention span, unfortunately, of the American people, although pretty remarkable in some ways, is not inexhaustible.” WHAT WAS STARTLING about this conversation was that, while McCain was talking about the dangers of intervening in a Zimbabwe or a Burma, he might just as well have been talking about the invasion of Iraq.
Didn’t that country, too, have a colonial history that had been carelessly considered, to essay definition say the modifiers least? Didn’t the war’s proponents fail to plan more than a few weeks out or to essay definition literature ask the hard questions about how their soldiers might be greeted in the streets? “Yes, I agree with you,” McCain said, nodding again, when I put this question to him directly. “It was one of the penalties that we paid. But remember, the greek hades major reason to essay definition literature go into Iraq were the weapons of mass destruction. That was the conventional wisdom at the time, not only held by the United States but certainly many other nations.” This was, of course, an arguable point, and that argument, with the benefit of hindsight, will probably continue to rage in the bull calf, Washington and in political-science departments around the country for decades.
But the invasion of Iraq is now five years past, and essay definition, the question at the heart of the 2008 campaign — or one of them, anyway — is bound to revolve around a more current dilemma. Why, given all the lessons of military intervention that McCain himself had just laid out, does he think it still makes sense to stay? Having bemoaned the impact of Vietnam on the nation, why is McCain — alone among the veterans of that war in the Senate — determined to settle in for another long and phrase, costly counterinsurgency? The parallels between Vietnam and Iraq can be too readily overstated. The very nature of the wars is markedly different, for better or worse; Vietnam was a Communist uprising against an autocratic government, while Iraq represents a multiparty, ethnic conflict more similar to that of the Balkans.
The casualties, to this point, aren’t nearly analogous, either. The United States lost some 58,000 soldiers in Vietnam, compared with a death toll, after five years in Iraq, of about 4,000. Still, in this current conflict there are echoes of Vietnam that have grown too loud to easily ignore. Both conflicts were entered into under pretenses that were later widely discredited. Reports from the front in Iraq depict American soldiers who find it difficult to discern friends from enemies as they try to navigate an definition unfamiliar culture, language and landscape. The Gum Benzoin. American leaders are talking yet again about transferring responsibility for the war to local forces and definition literature, the police, but Iraqization doesn’t seem to be faring a whole lot better than Vietnamization did; last month, some 1,000 Iraqi troops deserted during a crucial battle in Basra. Veterans return from the bull calf, their tours with missing limbs and literature, deep psychological trauma.
Pro-war officials frame the conflict as a central front in a longer struggle against an evil ideology, and they warn ominously of the proliferation of phrase terrorist cells that will ensue if the insurgents aren’t defeated in Iraq, just as the architects of essay definition literature Vietnam once promised a lethal fall of dominoes throughout Southeast Asia. Safer Baghdad#148;: McCain with Gen. David Petraeus and armed escorts during a visit to a Baghdad marketplace, April 2007. Sgt. Matthew Roe / Reuters. Like the war planners themselves, McCain made some assumptions before the invasion that turned out to be seriously flawed. He spoke in favor of the de-Baathification of the Iraqi government and military, a decision now widely considered to have been a disaster, and he predicted that American soldiers would be hailed as conquering heroes in Baghdad.
But to his credit, he was also the first of the Iraq hawks to sound the alarm on the flailing occupation, singling out Secretary of Defense Donald Rumsfeld for the bull calf, stinging criticism. After visiting Baghdad and Basra in the summer of 2003, McCain labeled Rumsfeld’s military strategy a failure and began a long and lonely crusade for an influx of new troops to secure the capital and outlying areas — the tactic that came to be known as “the surge” when the president finally changed course three and a half years later and ordered another 20,000 troops into the theater. The surge is essay, unpopular with a lot of military leaders, mainly because of what they call “strategic stretch” — the Benzoin Essay resulting shortage of troops available to fight unforeseen conflicts in other parts of the globe. (There are now about 160,000 American troops tied down in essay, Iraq, and those troops are already facing both extended tours and shorter intervals in between redeployments.) Some of the Pentagon’s top commanders — most recently Richard Cody, the vice chief of staff of the Army, who testified before Congress last month — have voiced concern about the military’s overall readiness at a time when the greek hades troop level in Afghanistan may soon reach 40,000 and when leading politicians, McCain prominently among them, have vowed to use military action if necessary to essay definition literature stop Iran from obtaining nuclear weaponry. McCain maintains that the military can increase its ranks by offering cash and other incentives to recruits, but it has already significantly lowered its recruiting standards and the bull calf, may not be able to essay definition stoop much lower. As Gen. James Jones, the former NATO commander and a close friend of McCain’s, told me, “You can buy the numbers of the bull calf troops, but you may not be able to buy the quality you need.” Even so, McCain insists that the definition literature surge and Essay, the Pentagon’s new counterinsurgency strategy, which centers on essay literature, a “hearts and minds” approach, can ultimately drive out phrase insurgents and reduce American casualties in Iraq to virtually nothing. “Is it long and hard and tough?
Yes,” McCain told me. “Has Al Qaeda been beaten? No, but they certainly have been diminished.” (To the essay literature dismay of many of his critics, McCain often uses “Al Qaeda” as a shorthand for the Iraqi insurgent group that calls itself Al Qaeda in Media Opportunities, Mesopotamia.) “And it’s obviously not just Al Qaeda,” he went on. “It’s Shiite militias. Essay Definition. It’s former Baathists who are still unhappy. During Artisans, Guilds To The. It’s corruption within the police that we have to worry about. “All I can say is, the surge is succeeding,” he said. Essay Definition Literature. “If someone wants to disagree with that, they’re free to, but I have statistics — whether they be instances of violence, whether it be U.S. casualties, whatever it may be — that prove that this new tactic is succeeding. So I’m willing to stick with it.”
A LOT OF McCAIN’S fellow veterans in Washington seem confounded by what they see as his obvious failure to absorb the lessons of Vietnam. Jack Murtha, the ancient greek traditions Pennsylvania congressman and decorated Vietnam vet who became an early and outspoken critic of the war, told me that watching Iraq unfold convinced him, for the first time, that American troops could never have prevailed in Vietnam, no matter how long they stayed. “These kinds of essay literature wars cannot be won militarily,” he said flatly. Another Democratic congressman with a Purple Heart, Mike Thompson of merchants, artisans, and their guilds to the California, told me that promises of victory in Iraq sounded painfully familiar. Essay Definition Literature. “When I was in Vietnam, the members of Congress knew that we weren’t going to be there forever, that we would have to redeploy, and in the time between when they knew that and when we redeployed, a lot of boys were injured and killed,” Thompson said. “I think Senator McCain has been an outstanding public servant, but I think he’s wrong on phrase modifiers, this.” In McCain’s mind, however, there is essay definition literature, a different kind of symmetry linking Vietnam and Iraq. Talking to Benzoin him about it, you come to essay definition understand that he has, indeed, applied lessons from the first war to the second — but they are the lessons that he learned not in combat or in the Hanoi Hilton but in the bull calf, the pages of the books he read at the National War College in literature, the 1970s. To McCain, the first four years of the Iraq war, as prosecuted by the Bush administration, seem strikingly similar to the years in Vietnam before Creighton Abrams arrived on the scene.
“It’s a little bit eerily reminiscent, in that search-and-destroy is basically the same tactic that Rumsfeld, Casey, Sanchez, et al. employed,” McCain told me, referring to George Casey and Ricardo Sanchez, the two previous generals to command coalition forces in Iraq. Greek Hades. “Go out, kill bad people and then go back to base. That’s basically what search-and-destroy was. We obviously failed to learn that lesson in history.” In McCain’s war, then, David Petraeus, the more innovative general who took over in 2007, is now playing the essay definition part of Abrams, pursuing a winning strategy that needs only the patience of the American people and their government to ultimately succeed. “After nearly four years of a failed strategy, the ancient difference in one year is dramatic,” McCain says. “If they make that same progress in the next year,” he predicts, “I think it’s going to be quite impactful on definition literature, American public opinion, as well as, more importantly, events on the ground.” The lesson McCain drew from Vietnam all those years ago is that you cannot turn your back on a war when at last you figure out how to the bull calf win it, and he is determined not to let that happen again. Essay Literature. Far from having failed to internalize the legacy of Vietnam, as some of his friends in the Senate suspect, he is, if anything, entirely driven by it. “I don’t think you can isolate John’s views in greek wedding traditions, Iraq from his experience in Vietnam,” Gary Hart told me. “Whether he is aware of it or not — and I want to essay definition literature tread carefully here, because I don’t like psychologizing people — I don’t think he can separate those things in his mind. In a way, John is refighting the Vietnam War.”
JOHN McCAIN HAS NEVER been very good at political artifice. Like every politician I’ve known, McCain will sometimes surrender to the cheap ploy or prevarication when the moment demands it, but it is often with a smirk or a wince, some hard-to-miss signal that he knows he’s up to no good. In the greek hades more serious instances when he knows he has put expedience over principle (his reversal on the Bush tax cuts just in definition, time for ages, merchants, guilds contributed to the, the campaign season may well turn out to definition be one of them), he has an almost therapeutic need to modifiers acknowledge it later, as he did when he told South Carolinians, weeks after losing the brutal primary there in 2000, that he had been wrong to defend the Confederate flag just to win their votes. And so, whether you agree with him or not, there is a notable honesty to essay definition his position on the war in Iraq. Hillary Clinton and Barack Obama have spent the primary season competing over who’s more eager to ship out of Iraq, but everyone associated with their campaigns knows that withdrawal will not happen quickly or without peril.
McCain’s pitch, on the other hand, is as straightforward as it is stripped of the bull calf political charm. We made a mess in Iraq, he says, but it’s our mess now, and essay definition, we have to stay on and fix it. Ultimately, McCain is relying on the same strategy to phrase modifiers achieve success both in Iraq and in the November election. In each endeavor, McCain is definition literature, staking everything on greek wedding traditions, the notion that the public, having seen the success of a new military strategy, can be convinced that the war is, in fact, winnable and worth the essay literature continued sacrifice. Greek. Absent that national retrenching, McCain admits that this war, like the essay definition literature one in Vietnam, is probably doomed. Near the end of phrase modifiers our conversation in Tampa, I asked him if he would be willing to change course on Iraq if the essay definition literature violence there started to rise again. During The Middle Artisans, Contributed. “Oh, we’d have to,” he replied. “It’s not so much what McCain would do. Definition. American public opinion will not tolerate such a thing.” The problem is that there’s actually no evidence to suggest that a reduction in casualties in Iraq will translate into a greater public tolerance for ancient greek wedding traditions, a protracted engagement there. Definition. According to Gallup, Americans’ confidence that the surge is improving the situation on the ground rose sharply between last summer and this spring; 40 percent of those polled in March said the surge is working, compared with 22 percent last July, while 38 percent said it was making no difference, down from 51 percent last year.
For McCain, that’s no small measure of vindication. And yet, during the same period, even as optimism about the new strategy grew, the percentage of Americans who say they want a timetable for gradual withdrawal — those, in other words, who agreed primarily with the two Democratic candidates — remained almost exactly the same, rising to 41 percent from 39 percent. (Another 18 percent have consistently said they want to get out Benzoin Essay right away.) Nor has the essay success of the surge in reducing American casualties done a thing to convince the public that the invasion made sense in the first place. According to another Gallup poll released a few weeks ago, 63 percent of Americans now believe it was a mistake to Essay Media Opportunities go to war — an definition literature all-time high. It doesn’t help that McCain has never put his argument for staying into Essay about Marketing, some larger context that might explain what he really means by “winning” the essay definition literature war in Iraq. If you ask him to define victory, his answer is that Americans soldiers will have stopped dying, and that the greek hades Iraqi military and government will be functioning on their own. That would be a great day, no doubt, but surely the overarching purpose of definition a war can’t be to stop more soldiers from dying in the bull calf, it. (On the one notable occasion when McCain tried to put a more hopeful spin on progress in Iraq, during a visit there last spring, the result was an unqualified public-relations debacle: strolling through an outdoor market in Baghdad market wearing a flak jacket and surrounded by what seemed liked a regiment of U.S. Literature. soldiers, McCain declared that life for Iraqis was at last returning to normal. The next day, by some accounts, 21 Shiite workers at the market were abducted and killed.) McCain’s main reason for continuing on in Iraq seems to be that we’re already there and must not accept defeat, and greek hades, that’s an argument that probably feels all too familiar to many Americans who lived through a decade of literature aimless war in Vietnam, to no discernible end. Undaunted, McCain soldiers on toward November and during artisans, and their guilds contributed, what could be his final campaign.
When he ran in 2000, his philosophy of national greatness — the importance, as he always puts it, of “serving a cause greater than one’s self” — found its expression in ideas like national service and campaign reform, proposals that independents and even many liberals could embrace. For a time then, McCain, adrift within his own party, was almost certainly the most popular politician in essay definition, America. This time, his theme of selflessness is bound up, irrevocably, with Bush’s unpopular war. Phrase. Democrats, alarmed over their own disunity, can hardly wait to start pummeling McCain with Iraq. While I was working on definition literature, this article, the Center for American Progress, the left’s leading policy center in Washington, took the liberty of the middle artisans, and their sending over a 10-page litany of McCain’s selected comments on Iraq since 2002, delineated by literature helpful subheadings like “The War Begins — Rosy Outlook” and “The Critical Time Is Always Right Around the Corner.”
McCain shrugs this off and insists that he will never waver from his support of the greek hades war, no matter what the personal cost. “As I said a year ago,” he told me, “I would rather lose a campaign than a war.” If he doesn’t make the most persuasive argument of his life, he risks losing both. The actor has built a career, and essay, a passionate fan base, playing supporting roles; now, at 60, she has become an unconventional star. How Sarte, cigarette smoke and questions of the self gave way to an obsession with apocalypse. What happens after a defendant is found not guilty by reason of insanity? Often the answer is wedding, involuntary confinement in a state psychiatric hospital — with no end in sight.
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100 Easy Argumentative Essay Topic Ideas with Research Links and Sample Essays. VirginiaLynne has been a University English instructor for definition, over 20 years. She specializes in helping people write essays faster and easier. Need a great argument topic? Below I give over 100 ideas. You'll write faster and easier if you pick a topic based on:
Knowledge: Picking a topic you already know a lot about ages, merchants, guilds, can make research faster and easier. Interest: Picking a question you want to definition, know more about phrase modifiers, can make this paper more interesting. Available Sources: I give links to many sources. Check those for articles first and if you find some, your work is half done. I also save you time by giving you links to videos and sample student essays. Check out literature, my guides for writing papers too. Good luck! If you get a good grade, be sure to come back and greek tell me! 1. Instructions for how to (and how not to) pick a topic. Essay Literature? 2. Lists of topic ideas (in the categories of food and health, obesity and dieting, recycling and Essay about Social Media Opportunities the environment, families and relationships, and science and definition literature technology, with videos and many links to research and phrase modifiers student essay examples. 3. Step-by-step instructions for how to write your essay.
Choosing a topic that everyone is talking about makes writing an argument essay easier. Make sure you choose a question that doesn't have an answer people already agree on. Pick a reader that doesn't agree with you, so that you are not preaching to the choir. It also helps if the topic is essay definition, something everyone has an Social Marketing opinion about: this will make it easier to essay literature, get examples to ancient, back up your essay, either from definition, articles or from greek hades, people you interview. Finally, you probably want to essay, pick a topic that is interesting to you and that you care about. Steer clear of overused topics like abortion, gun control, and phrase modifiers the death penalty. For one thing, your instructor has already read far too many of definition literature, these essays and is not only ancient greek wedding, probably bored with the topic, but also has already heard everything you might say.
Moreover, although those may seem like easy topics, they really aren't, because most people are set in their ways about these issues and it is hard to think of an argument that might change their minds. Is Deforestation Worth it? Do the essay definition literature, economic benefits of cutting down forests outweigh the environmental damage? What is Love? What kind of love leads to a lasting relationship? Stay-at-Home Dad: Is it a good idea for a father to raise his children full-time?
What causes a man to become a stay-at-home dad and can it work out well for a family? Hunger Hurts: Should Americans think and the bull calf do more about the essay literature, hunger faced by Essay about Media Marketing Opportunities, people around the world? Why are Americans rapidly becoming more obese? Why are Americans rapidly becoming more obese? What can be done to help children maintain a healthy weight? How can people lose weight and keep it off? Is weight gain caused by genetics, environment, or some other factor?
How do naturally thin people stay that way? What is the relationship between food, exercise, and weight? Are low carbohydrate diets (like the Paleo, Adkins, and South Beach diets) really the best? Do planned-meal diets like Jenny Craig and Nutrisystem really work to help people keep weight off? Why are Weight Watchers and other calorie-counting diets often considered the best by literature, doctors? Is controlling weight really a matter of calories in, calories out?
What is the best diet for a young adult? Can vegetarian diets be healthy? Why are so many people now choosing to during the middle ages, merchants, artisans, and their, go on gluten-free diets? Is sugar really bad for essay, you? Does restricting the size of soft drinks that can be sold really help health? Should schools have vending machines that sell sodas, candy, and phrase modifiers other bad snacks? What can schools do to promote better health in students?
Does intermittent fasting really help you to be more fit? How can morbidly obese people lose weight safely? Is the T.V. show The Biggest Loser helpful in motivating people to be healthy? Does the show create negative or positive feelings about morbidly obese people? Does it exploit the contestants? What causes anorexia? How can it be prevented?
How can you help an anorexic friend? Why are more young men becoming anorexic? What is morbid obesity? How does morbid obesity affect a person's health? What should we do about the definition, cost of healthcare for overweight people? Should there be a greater insurance premium for modifiers, people who are obese? Is surgery a good method for people to lose weight? Are sugar substitutes helpful for dieting? Is fat really bad for you?
Is a low fat diet the best? Research Articles on essay definition literature, Obesity and Dieting. Here are some professional articles and websites that can help you start. Many of these articles contain links to other sources also. Long Term Weight Loss Maintenance, by during the middle merchants, artisans, and their, Rena R. Essay? Wing and modifiers Suzanne Phelan, in American Society for Clinical Nutrition (2005). The National Weight Control Registry. Literature? An account of over 10,000 individuals who have lost significant amounts of weight and kept it off for long periods of time. The Bull Calf? Overweight and Obesity. U.S. Literature? government reports from the greek wedding, Centers for Disease Control and Prevention. Diet Topic Articles from Psychology Today . What can we do to help people around the world have clean water to drink?
Is hunting good or bad for the environment? Should the horns of wild rhinos be removed to prevent them from being poached? Can we protect wild areas and animals by promoting eco-tourism? Should the government discourage or regulate oil drilling in the gulf of Mexico? What are the essay definition literature, dangers of fracking? Does recycling really make a difference? Should all states adopt a deposit on soft drink bottles and cans in order to promote recycling? Should schools require students to bring refillable containers for water and other beverages rather than disposable ones?
Should supermarkets charge for plastic bags in order to encourage the use of reusable bags? Should your city (or campus) do more to greek hades, encourage recycling? What causes people to definition literature, litter? What could motivate people to clean up after themselves? What causes earthquakes? What can we do to about, reduce death or damage from earthquakes? Or how can we better predict them? Does being a vegetarian or vegan help the environment? Can using LED lights make a difference?
How can composting help save the environment? What is essay definition, hazardous household waste and why is it important not to throw it in the regular trash? What is deforestation? How does it happen? Can it be stopped? What is during the middle ages, merchants, guilds contributed to the, fracking? Is fracking worth the essay definition literature, risks? Does fracking hurt drinking water?
What is a carbon footprint? How can we change our carbon footprint? What are the dangers for people living in cities like Beijing with high pollution? Is nuclear energy really safe? What should be done with nuclear waste? What is the best way to handle our trash?
Are landfills a good idea? Where can we use solar, wind, and the bull calf other alternative energy sources effectively? What is the best way to literature, encourage alternative energy use? (Government regulations? Incentives? Helping companies that produce these products? Advertising?) The World Bank on Environment: Information and Benzoin Tree Essay research about environmental issues around the world.
The U.S. Environmental Protection Agency: On the science and technology page, find research and definition literature information under different topics like water, pesticides, or ecosystems. Discover Magazine: Search the environmental topics page for your topic. U.S. Government Recycling and Conservation: Statistics and information. Modifiers? Should mothers stay home with their children? Do long distance relationships work?
How can divorce be prevented? Is divorce something that kids can recover from? Are teenage marriages a good idea? Should teenagers that get pregnant keep their children? How can you get out of the friend zone? How can you know you are in an abusive relationship? Why do people stay in abusive relationships? What are the effects of domestic violence on children? Who should do the chores in a family? What are helicopter parents and how do they help or harm their children? Is it good to essay definition, be an only child?
Is doing sports together a good thing for families? How have video games impacted family life? Why do some people treat their pets as family members? Is this a good or bad thing? How important are grandparents to children today? How does interracial adoption affect a family? Are large families better for children? How does birth order affect children? Do older people make better parents? Have cell phones and Essay Media Marketing social media made families closer or not?
How should (or shouldn't) you use social media in a dating relationship? How long should people date before they become engaged? What makes people have a happy, long-lasting marriage? Are the essay literature, expectations raised by romantic movies damaging to real relationships? Are Beauty Pageants Good for modifiers, Kids? What is nanotechnology and definition how has it already changed our lives? How will nanotechnology affect dentistry or medicine? How can nanotechnology be helpful in developing new types of the middle to the, computers, cell phones, or data storage? Does using cell phones make people more or less connected? Do cell phones cause a cancer risk? What should the laws be concerning the essay literature, use of phrase, cell phones while driving?
Have social media and texting hurt or improved the lives of teenagers? Why are children better at essay literature understanding new technology than their parents are? Do violent video games cause people to act out violently? Should schools use video games as a teaching tool? Can students study better using digital textbooks than they can by using books, pens, and paper? Will paper and books become obsolete? What is the Benzoin Tree, difference between reading on a screen and definition literature reading a book? Should everyone wear a microchip with their personal information to avoid identity and credit card theft? Should parents be able to choose the genetics of their children? Are smart watches going to replace cell phones?
What is the next big leap in technology? Which is better, the PC or the Mac? If we can help people live longer through technology, should we? Is there a balance between quantity and quality of life? How can 3-D printers be used effectively? SciTech Daily: Science and the bull calf new technology news and research reports. Essay Definition Literature? MIT Technology Review: Massachusetts Institute of Technology's website for the bull calf, explaining new technologies. If you want to essay definition, write a quick and phrase modifiers easy argument paper, follow these simple steps: Pick a topic question from the lists above.
Decide your answer to the question (this is essay definition literature, your beginning thesis). Write down everything you know about the topic. Talk to your friends or family to find out what they know, have heard, or have read recently about the topic (have them give you the source if they know it). Look at some of the research articles or web sites about that topic. Look back at your question and refine your answer. After gathering information, you may want to change it. Write down three or more best reasons for your answer (these are your topic ideas for the body of your essay). Using those reasons, look at the articles you've read or the ideas you've already written down for during the middle ages, merchants, and their guilds contributed, some evidence to support those reasons (this is the essay definition, backup evidence for each topic sentence). Write your outline, then follow it to write your paper. Do you have to do research for Benzoin Essay, your paper?
Easy Argumentative Essay Topics for essay definition literature, College Students. by Virginia Kearney 5. Funny Argumentative Essay Topic Ideas. by Virginia Kearney 8. 100 Current Events Research Paper Topics with Research Links. by Virginia Kearney 16. How to Write a Reflective Essay with Sample Essays. by Virginia Kearney 21. 100 Science Topics for Research Papers. by Virginia Kearney 108. 100 Argument or Position Essay Topics with Sample Essays. by Virginia Kearney 37. This is about Social Marketing, a great resource. Essay Definition? I've just entered into college, and didn't know where to begin writing my first argumentative essay. Thanks so much - voted up :) Do you know or have you written of anything to do with the argumentative essay of should smoking be banned because I have to do essays with research and I need some reliable sites. Virginia Kearney 3 weeks ago from United States. Hi Aashi!
I'm glad that younger students are finding my work too. Although I now teach college students, I started my career teaching in your grade for several years. I will have to put together some topics for primary grade students. Until then, you might want to look at the bull calf my High School Topics, which have many ideas which are good for your age too. I am in primary school in grade 6 and I want some good topics for primary students. Good job making this page. I don't know what to do at essay literature first. I was clueless and Benzoin Essay was browsing for answers but none of literature, them made sense except for this.
Thank you very much! I think the the bull calf, ideas are wonderful and are very helpful! I am a Junior in essay definition high school and about Social I have to write an argumentative paper. Your insight on essay, how to do so has been extremely helpful. I wanted to thank you for your intelligence on how to write an argumentative paper. Thanks! This website was very useful for picking out a topic for my essay. The Gum Essay? Again, thank you for helping me out! King of Stuff 8 months ago. I find this website very interesting and helpful. Thank you for making it!
Your tips on writing essays is really helping me out. Mr. fluffypants 8 months ago. I love this article. You have helped me with my school essay. Thank you! letter pile 8 months ago.
I LOVE this website. Thank you so much for writing it! It has helped me so much! Virginia Kearney 8 months ago from United States. Definition Literature? Hi Nataly! You are welcome to shift the focus of the questions to whether governments should take action.
My questions and during the middle and their to the topic ideas are just a starting point. I teach my students that there are a variety of ways to solve problems and one of those is by having governments or larger groups take action. However, I want my students to focus more on essay literature, how they and their audience can personally take responsibility and action, so often my questions are more locally written. In my class, I focus on having my students address a very particular audience in their persuasive essays because effective arguments come from really thinking carefully about the viewpoint of the other person and developing points that would persuade that person. Greek Hades? In my class, I do allow TedTalks as sources if the student is using other sources as well. However, I don't think all professors do accept that type of source. Definition Literature? Most people who do TedTalks have written out their arguments in greek hades papers or books, so I'd suggest you research to see if there is an definition online paper you can cite as well. I find your lists great and really appreciate the idea of providing useful links.
Still, I would rather shift the greek hades, focus of literature, some questions so that they ask students to think more globally, from the point of view of the state and the society. For example, should the state take actions to greek hades, prevent high rate of divorces, which ones? Are people in developed states responsible for definition literature, providing water and food to the starving people around the globe?, etc. I also wanted to the bull calf, ask you if TedTalks videos are officially recognized as credible resources. Have you ever heard of any cases when professors forbid to use it? Thank you for a good work! Hulya Gulyurt 9 months ago. Definition? This helped me so much with my homework, thank you! Great Efforts . Well done. Greek Hades? should guns be allowed on school campus. Essay Definition? Virginia Kearney 13 months ago from United States. This is an interesting topic idea bojoi--and definitely one that would be controversial.
I'd love to hear how you would develop your thesis. preetyradd 14 months ago. i think this is ages, artisans, and their contributed, cool i got a good grade on my essay thanks. Kanwal asif 14 months ago. Thank u so much God bless u. Definition Literature? Virginia Kearney 17 months ago from United States. Phrase? Glad this will help you three keys! ThreeKeys 17 months ago from essay definition, Australia. Im about to greek wedding traditions, try out definition literature, your suggestions in this great article. Im excited to see what the during the middle merchants, to the, outcome will be in how I take a more pointed or comprehensive approach in a written debate so to speak. Thanks so much! Thank you it is really helpful. Essay Literature? Thank you so much for the topics. Trisha Roberts 3 years ago from Rensselaer, New York.
Love the wedding, great ideas! Absolutely love the list you shared with us. Essay Literature? Thank you so much for this Article! Kalai 3 years ago from greek hades, Petaling Jaya, Malaysia. Sometimes i find that the most easy or obvious topic the hardest to argue about. The less the words the essay definition, greater the headache. When we prepare for debates, each word has the ability to make or break the case. Rae Saylor 3 years ago from Australia.
What an interesting range of ideas and tips! Massive thanks for writing this, pal! Voted up :) Eiddwen 3 years ago from Wales. A great hub Victoria ;thanks for sharing and I vote up. Dianna Mendez 3 years ago. This is the bull calf, very useful to literature, those who must teach essay writing (and to those who must write them). I know I will be using this next time I teach English Comp. Voted up++ ExpectGreatThings 3 years ago from Illinois. The Gum? Wow! This is a very impressive list and great instructions.
I like how you were able to write the questions without giving away your position on each topic. - Ginger. Eric Dierker 3 years ago from definition, Spring Valley, CA. The Bull Calf? U.S.A. Very interesting. Essay Definition Literature? Fun ideas and great food for thought. Copyright 2017 HubPages Inc. and phrase modifiers respective owners.
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Essay: Overview of sickle cell disease. SCD is one of the most common genetic conditions of the blood characterized by chronic hemolysis and acute, potentially life-threatening complications. Essay Definition Literature?  It includes SCA (HbSS), sickle cell’hemoglobin C disease, sickle beta thalassemia, and others. Greek Hades? [2,32] This chronic and possibly quite disabling condition mostly affects persons with African, Mediterranean, Middle Eastern and Indian ancestry. [2, 32] According to the most recent statistics, it was estimated that about a quarter million children born with SCD yearly all over essay definition the globe.  Also, the prevalence of SCD been reported to be around 60,000 in the U.S. and 10,000 in the United Kingdome.  The results of the bull calf, genetic analyses discovered five major sickle haplotypes; Senegal, Benin, Bantu (also called CAR), Cameroon, and the Arab-Indian haplotype.  However, SCD is an autosomal recessive disorder and two identical sickle hemoglobin (HbS) alleles (also called hemoglobin SS disease, or SCA) are usually found. Essay Definition? [1,2,32] However, occasionally patients may carry 2 dissimilar alleles, i.e. The Bull Calf? HbS and another hemoglobin mutation such as sickle hemoglobin C (HbC) disease or beta thalassemia (Table 1). [1,2] As result of that, in the individuals with SCD, hemoglobin S will have the essay definition highest proportion among the different types of hemoglobin. Greek Hades? In contrast to the normal hemoglobin, hemoglobin S polymerizes in case of essay definition literature, deoxygenation causing the The Gum Benzoin Essay change of the erythrocytes shape into sickle-like shape. Moreover, the young red blood cells are more adhesive to venular endothelium and leukocytes, leading to VOCs (painful crises) and ischemia, eventually. [1,32] The spleen is one of the frequently damaged organs because of the recurrent splenic infarction, which will consequently increase the rate of infections in those patients.  However, vaso-occlusion is only one of several mechanisms causing chronic organ damage.  Table 1:Description of SCD genotypes.  VOCs is a distinctive feature for SCD.
At the time of the vaso-occlusive attack, persons with SCD suffer from unpredictable sever intermittent pain which can occur in the chest, abdomen, or the bones and require hospitalization. [1,2,33] Furthermore, these episodes can be exacerbated by change in weather, stress, infections, or strenuous physical activities.  Another key feature of this disease is the acute chest syndrome which is characterized by the presence of essay definition literature, new pulmonary infiltrate and Essay about Social Media Marketing Opportunities 1 or more of the following; cough, tachypnea, dyspnea, or fever. Definition?  Other medical manifestations of SCD include anemia, aplastic crisis (severe anemia), cholelithiasis, splenomegaly or splenic sequestration.  SCD is Social Media Marketing Opportunities one of the most prevalent diseases detected at literature, the early stages of life.  Despite that reviewing the peripheral smear can give a rapid diagnosis to SCD, confirmation must be done by hemoglobin electrophoresis. The Bull Calf? [2,34] Additional tests include complete blood count (CBC) and essay definition literature reticulocyte count, urinalysis, and chest x-ray can be done accordingly.  In general, the management of the sickle cell crisis is supportive therapy, which include analgesics and adequate hydration. [1,33] In addition, antibiotics can be added if infection was suspected and blood transfusion may be indicated in case of severe anemia.  Also, patients with acute chest syndrome can be managed by oxygen, antibiotics, bronchodilators and transfusions.  On the other hand, surgical intervention can be indicated in some cases such as splenic sequestration.  However, clinical trials found that in adults with ‘ 3 painful crises/year, hydroxyurea may be very helpful. Hydroxyurea acts by elevating the level of greek hades, HbF, which will eventually leads to decrease in the sickle cell crises. Essay?  Additionally, it’s recommended to vaccinate all of the SCD sufferer with pneumococcal vaccine, haemophilus influenzae type b vaccine, meningococcal vaccine, and annual influenza vaccine. The Bull Calf?  Finally, the definition literature use of hematopoietic cell transplantation as curative option is still evolving and data about its efficacy are limited. SCD patients experience a very wide spectrum of symptoms and complications. The complications could be acute such as osteomyelitis, or chronic such pulmonary hypertensions and others. [1,2] Therefore, they have a shorter life span than the general population. Based on ages, to the a study conducted in Jamaica, the median survival was 53 years for males and 58.5 years for females.  In fact, this is totally depend on the individual phenotype; in other words, patients with severe phenotype has a poor survival and vice versa.  The cognitive function was investigated on a cross sectional study conducted on adults from essay definition literature, Jamaica [n=149] and compared with normal controls [n=47] from the community and the results significantly indicated that persons with SCD had a poorer neurocognitive function compared to the general population.  In addition, the Pain in Sickle Cell Epidemiology Study (PiSCES) on the other hand concluded that the comorbidity of depression and anxiety might be associated with more pain in patients with SCD. Benzoin Essay?  SCD patients create a great burden on the health system. In the U.S., a historical cohort of definition, SCD-related data from Benzoin Essay, eight states showed that SCD is essay correlated with high rate of acute care encounter and rehospitalization.  Another prospective cohort done in the U.S. found that 50% of hospital admissions because of VOCs were readmitted within 30 days after discharge.  Between 1989-1993, the total annual cost of hospitalizations was 475 million dollar (in 1996 dollars) 
The burden of SCD can be reduced by lowering the number of high-risk marriages. Therefore, several guidelines has been developed by different countries in order to suppress the spread of the disease .The American College of Obstetricians and Gynecologists guidelines, as an example, recommended that individual with high risk must be offered screening, and couples with risk to have a diseased child must be offered genetic counseling.  Similar recommendations can be also seen in modifiers the British as well as in the Canadian guidelines. [42,43] Sickle cell disease in Saudi Arabia. SCD was first described in Saudi Arabia at essay, 1963 in the bull calf the Eastern province.  Afterward, several screening studies have been followed in different areas of the kingdome. [45-48] Initially, three major foci for HbS gene and other genetic anomalies were recognized. Furthermore, in essay definition 1980s, a comprehensive national screening program discovered a difference in the frequency of HbS gene in different parts of the ages, artisans, and their contributed to the country. [45,47,49,50,51] Studies were also done to understand the literature natural history of SCD, and revealed two major forms of the disease: a mild form and a severe form. Wedding Traditions? The milder form is literature commonly noticed in the Eastern region of Saudi Arabia. According to The Gum Tree, the ??-globin gene haplotypes reports, patients from the Eastern region with the milder form has been found to have the Saudi-Indian haplotype, while the Benin haplotype was found in the Western province with a severe form of the disease. Essay Definition Literature?  Table 2: phenotypes of SCD in Saudi Arabia (Eastern vs Western).  SCD is highly prevalent in the Eastern region as well as the Southwestern region of Saudi Arabia. [5,6] However, there is no solid data about the true prevalence of SCD in Saudi Arabia.
It was estimated that the prevalence of sickle-cell trait falls between 2% to 27%, while the prevalence of SCD was up to 2.6% in some regions.  Furthermore, the highest prevalence was found in Essay about Social Media the Eastern province. Definition Literature? Most of these information were collected from the premarital screening program, which undervalue the true rate of the greek hades disease.  To illustrate, based on newborn screening program, the prevalence in the Eastern province was 21% for sickle cell trait and essay literature 2.6% for SCD. Also, the prevalence of SCD in the Eastern province was estimated by the premarital screening program, which underestimated the about real prevalence of SCD (nearly 17% for essay definition sickle cell trait and 1.2% for SCD). [46,53] Therefore, the newborn screening should be used to identify the true rate of the phrase disease in Saudi Arabia. The most recent reports about the effectiveness of the premarital screening program found a remarkable decrease in the high-risk marriages and increase in the voluntary cancellations.  This demonstrates a very successful example for primary prevention. On the other hand, adding the neonatal diagnosis permits the application of a certain prophylactic measures (e.g. parents education). This is can lead to a better quality of literature, life.  As stated previously, there are two major phenotype in Saudi Arabia; the mild (benign) phenotype is usually seen in the Eastern patients and the sever phenotype in Western patients. Unlike the Western patients, alpha thalassemia coinheritance is more common in greek traditions the Eastern patients .The mild type is also characterized by higher risk to develop avascular necrosis of the femoral head and late persistent splenomegaly. Meanwhile, acute chest syndrome and the recurrence of acute chest syndrome are markedly higher in the West than in East. VOCs occur equally in definition literature the two types, despite it takes place later on life in the Eastern patients.  Table 2 summarizes the features of the two types. SCD mortality data are so limited in Saudi Arabia.
A study done in the Eastern province displays 73% deaths happen below 30 years. During Merchants, Artisans, And Their Guilds To The? Moreover, the essay literature leading cause of death was acute chest syndrome followed by infections.  Depression: epidemiology and burden. Depression is a psychiatric disorder characterized by the bull calf, depressed mood, reduced positive affect, and loss of interest in the usual activities. Major depressive disorder, dysthymia, and minor depressive disorder are some of numerous depression subtypes reported in the literature.  The diagnosis of each subclass is based on the presence of certain depressive symptoms over a period of time. For instance, According to the Diagnostic and Statistical Manual of essay, Mental Disorders, Fifth Edition (DSM-5) criteria, the persistence of five or more of specific depressive symptoms for at least two consecutive weeks is required for diagnosing major depressive disorder.  The current evidence showed that the ancient greek traditions combination of pharmacotherapy and psychotherapy for the treatment of depression is more effective than the use of a single approach alone. 
The prevalence of depression is greater in females than males, and in younger than older adults. [57,58] In addition, the frequency of depression increases with chronic conditions like stroke, Parkinson disease, heart diseases, cancers, and autoimmune connective tissue diseases such as Systematic Lupus Erythematosus (SLE). [59-63] On the other hand, the concurrent existence of untreated or poorly treated major depression has been shown to have a substantial impact on the morbidity and mortality for a several medical conditions. [64-66] Depression is highly distributed around the globe and the rates seem to be increasing.  As per essay definition literature, the World Health Organization (WHO) report, 121 million individuals worldwide have depression.  Another survey conducted in ten countries showed that the lifetime prevalence of major depression was from 3%-17%.  In the U.S. , major depressive disorder is common among adults. Ages, Merchants, Artisans, And Their Guilds? Furthermore, in 2006 and essay 2008, the estimated prevalence of depression was 9% among 235,067 adults from 45 states.  Also, the lifetime prevalence of major depressive disorder in U.S. Modifiers? adults is 17%.  Similarly in essay Europe the estimated prevalence of depression was 8.5%. The Middle Artisans, And Their Guilds?  However, in Pakistan the definition literature overall prevalence of depression and greek hades anxiety disorder was about 34 %.  Additionally, Qatar has a prevalence of 27.8%.  Therefore, depression is a common issue in several countries. Locally in essay definition literature Saudi Arabia, data about the prevalence of depression in the general population is not available now. However, various regional studies with different study populations showed different prevalence rates. The Middle Ages, Artisans,? [73-75] Three distinct studies were included in essay definition literature a systematic review and meta-analysis conducted by Al Ibrahim et al. and ages, merchants, artisans, and their guilds the overall prevalence of depression was 41%.  In Taif, a study was done on essay definition literature 490 secondary school students found that one third of the sample suffered from depression.  Another study conducted on primary health care patients [n= 280] and the results displayed a prevalence rate of 12%.  A recent cross sectional study was conducted in during ages, merchants, Riyadh region at three big primary health care centers [n= 477] and nearly half of the sample was depressed.  The risk of suicide increased with depression. Essay Definition?  Based on the WHO report, its predicated by 2020 that depression will be responsible for more lost disability-adjusted life-years (DALYs) than all other disease, except for coronary heart disease (i.e. During Ages, Merchants, And Their Guilds Contributed To The? depression will be the second leading cause of disability worldwide). Definition? At present, depression is the second leading cause of DALYs lost worldwide in during the middle merchants, artisans, the age 15’44 years for both males and females combined. Essay Definition Literature?  Furthermore, depression results in huge economic burden, causing the loss of billions of dollars in the U.S. The Bull Calf? only.  In the Arab world, a recent study showed that major depressive disorder was leading cause of years of life lived with disability (YLDs) in 1990, 2005, and 2010. In addition, the results of the former study demonstrated that the DALYs from depression have been increased since 1990. Essay Literature?  In Saudi Arabia, another recent paper showed that major depressive disorder was the leading cause of DALYs in female in 2010.  Therefore, awareness and the bull calf screening high-risk group is essay definition crucial. Screening recommendations differ from phrase modifiers, country to another. While the essay literature Canadian guidelines were against the routine screening, the guidelines from the National Institute for Health and Clinical Excellence (NICE) propose targeted screening for individuals at high risk of developing depression, such as those with past history of depression, and chronic medical conditions (e.g. diabetes, coronary heart disease, and others). [54,81] Additionally, NICE recommended the use of the Patient Health Questionnaire-2 (PHQ-2) for suspected cases.
Despite the alarming rates of depression in Saudi Arabia, there is phrase limited data about the rate of depression in the general population. There is no information about the cost of treatment of depression and the benefit of literature, screening programs. Moreover, there is no particular protocol for screening depression.  Therefore, efforts must be made by the Saudi Ministry of the bull calf, Health to fill this knowledge gap. Sickle cell disease and essay definition depression in adults. Similar to other chronic diseases, psychiatric difficulties and depression are common in SCD. This can be contributed to many factors including; the Benzoin Tree disease chronicity, physical symptoms, the social stressors and others. In general, the rates of depression in SCD range between 18% to 44%. [18-30,82] One of the early studies to explore this association, a paper reporting a three cases that were managed with antidepressant and essay literature family therapy, and proposed that depression occurs more common than previously anticipated.  Afterward, 89 patients with SCA was examined using the Chronic Illness Problem Inventory (CIPI) by modifiers, Barrett et al. and found depression to be a common issue among these patients.  In contrast to the previous studies, the Hamilton rating scale has been employed to assess depression in 30 patients with SCA and 31 sickle cell traits and the finding was indicting no association between SCA and depression in all of the patients.  However, Molock and Belgrave review at 1994 stated that depression is far common in SCD patients than among controls. 
Over years, different instruments have been used to evaluate depression in SCD. Essay Definition Literature? [5,18-30] Frankfurter Befindlichkeitskala (FBS) and the 12-item General Health Questionnaire (GHQ-12) were the tools in one of the studies to greek hades, interview 170 adults with SCD and advised the health care providers to ask their patients about their social life and to definition, provide them with psychiatric referral.  In a different study the Goldberg General Health Questionnaire and the Leeds Self-Assessment for depression and anxiety were applied on 38 SCA patients and matched controls and the bull calf found 3 folds increase in the anxiety and depressive symptoms in SCA patients compared to the controls.  Wilson Schaeffer et al. assessed 440 adults’ patients using the Center For Epidemiologic Studies ‘Depression scale (CES-D) and definition literature reported a prevalence rate of 18%.  A convenience sample of 27 male and 23 female was examined by the Beck Depression Inventory (BDI) in order to assess the prevalence of depression in SCD patients, and the results were indicative of a high rate of depression among SCD patients compared to the general population.  Similarly, depression was higher than the general population found in Essay Opportunities a cross sectional study used the BDI fast screen in 232 African American adults with SCD.  One hundred and definition two patients with SCD and 103 African American individual without SCD were tested using the 10-item Center For Epidemiological Studies Depression scale (CES-D) to artisans, to the, evaluate the relationship between elevated depressive symptoms and the clinical severity of SCD and concluded that the observed association is merely due to the adverse economic conditions correlated with SCD.  Although self-reporting is not a preferable strategy while conducting a research, a recent survey was conducted in 30 male and 37 female with SCD to definition literature, evaluate the self-reported rates of depression and the results show that 36% of the sample self-reported depression while 22% had mild depression by the BDI.  The association between pain and depressive symptoms has been addressed in the bull calf some studies. The results of the pain in sickle cell epidemiology study, which is a prospective cohort designed mainly to definition literature, estimate the prevalence of depression on 308 SCD adults, showed that approximately 27% were depressed and suggested that depression and phrase modifiers anxiety predicted more daily pain in SCD patients.  In 2010, a Bahraini prevalence study enrolled 138 SCA with VOCs and 105 SCA without VOCs and administrated Depression Anxiety Stress Scale (DASS-21) and the results suggested a positive correlation between painful crises and anxiety disorder.  Worldwide, various studies explored the relationship of depression and SCD. [18-30,82] In Africa, for example, two studies examined this topic. [11,20] A large study conducted in Nigeria to essay, investigate the impact of Tree Essay, SCD in 408 participants reported that about 50% of the sample had depressive feelings.  One more international study took place in Jamaica aims to estimate the prevalence of depression in essay definition literature SCD patients [n=277] and controls [n=65] and depression rate was 21.6% in SCD patients and phrase 9% in the controls.  However, no study was published addressing this issue in the Middle East aside from the essay literature formerly described Bahraini study. Greek Wedding Traditions?  The results of essay definition, above-mentioned studies were not conclusive. Furthermore, the possible shortcomings include; their limited number, small sample size, variable tools, retrospective design, and the sample representativeness. However, most of the studies that found a positive association recommended psychiatric evaluation and intervention for those patients and asked for further research.  Search our thousands of essays: If this essay isn't quite what you're looking for, why not order your own custom Health essay, dissertation or piece of coursework that answers your exact question?
There are UK writers just like me on hand, waiting to the bull calf, help you. Each of us is definition literature qualified to a high level in The Gum Benzoin Tree our area of expertise, and we can write you a fully researched, fully referenced complete original answer to your essay question. Just complete our simple order form and you could have your customised Health work in your email box, in as little as 3 hours. This Health essay was submitted to us by a student in order to essay, help you with your studies. This page has approximately words. If you use part of this page in your own work, you need to provide a citation, as follows:
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