anonymous function wikipedia
Anonymous function. In computer science and mathematics, an anonymous function is a function that has no name. Usually, a function is written like: f ( x ) = x 2 − x + 42 {\displaystyle f(x)=x^{2}-x+42} . game.Players.PlayerAdded:connect(function(player) player.Chatted:connect(function (msg) --if this anonymous function was instead a named function outside of the anonymous function in the PlayerAdded connection, --it would not be able to access the `player` variable end) end) Java 8 now supports lambdas, so it should be added to this page. — Preceding unsigned comment added by 12.111.88.66 (talk) 05:18, 18 August 2013 (UTC) The article might be more comprehensible if it introduced anonymous functions as *parameters* to named function. — Preceding unsigned comment added by 68.50.114.83 (talk) 22:11, 21 November 2011 (UTC) I wasn't sure what the difference was between Full and Some support. function sayHello(name) { var text = 'Hello, ' + name + '!'; var sayAlert = function() { alert(text); } return sayAlert; } var say = sayHello('John'); say(); alert(say.toString()); // Returns the code of the anonymous function. This is useful for shortening code, however this should be avoided in code that runs more than once. This is because the function is being defined more than once, which is unneeded because it is a literal function that is unchanging. These functions should be semantically named and used as such. JavaScript closures. In programming languages having first-class functions, closures (that are also called function closures or lexical closures) are a technique for implementing lexically-scoped name binding. Sometimes Lua's anonymous function syntax, function() return ... end, feels verbose for short functions, such as lambda functions in functional programming styles. local y = map(function(p) return translate[p] end, x) Anonymous function. In computer programming, an anonymous function (function literal, lambda abstraction) is a function definition that is not bound to an identifier. Anonymous functions are often: arguments being passed to higher-order functions, or. Sometimes Lua's anonymous function syntax, function() return ... end, feels verbose for short functions, such as lambda functions in functional programming styles. For example, in Lua a map function [1] function might be used as such: In some languages like Perl, this is written more succinctly as. Anonymous function definition: var anon = function() { alert('I am anonymous'); }; anon(); One common use for anonymous functions is as arguments to other functions. Another common use is as a closure, for which see also the Closures chapter. Use as an argument to other functions:
In computer programming, an anonymous function (function literal, lambda abstraction) is a function definition that is not bound to an identifier.