anonymous-function

This question already has an answer here: Calling closure assigned to object property directly 11 answers I have php code like: class Foo { public $anonFunction; public function __construct() { $this->anonFunction = function() { echo "called"; } } } $foo = new Foo(); //First method $bar = $foo->anonFunction(); $bar(); //Second method call_user_func($foo->anonFunction); //Third method that doesn't work $foo->anonFunction(); Is there a way in php that I can use the third method to call anonymous functions defined as class properties? thanks Gordon Not directly. $foo->anonFunction(); does not

I have code like this: function demo() { this.val=5; function() { this.val=7; }(); } Now when I give execute this code in the firefox or chrome console it gives a syntax error. I don't understand why this is an error because I have read that javascript functions are objects so when I call the anonymous function, inside it this points to function demo and should change the val to 7 , so if I do var x=new demo(); x.val; //should give 7 but when I do this function demo() { this.val=5; var f=function() { this.val=7; }(); } window.val; // gives 7 I don't understand if functions are objects then why

I'm looking at section 13 or the ECMAScript specification (v. 5). An anonymous function expression is initialized as follows: Return the result of creating a new Function object as specified in 13.2 with parameters specified by FormalParameterListopt and body specified by FunctionBody. Pass in the LexicalEnvironment of the running execution context as the Scope. Pass in true as the Strict flag if the FunctionExpression is contained in strict code or if its FunctionBody is strict code. this logic is very similar to how a function declaration is initialized. However, notice how different

I'm facing a problem trying to call Compile() on the LambdaExpression of type Expression<Func<MyType, bool>> which has a depth around 400. And lesser values do not cause any problems. And I can't find anything about such kind of limitation. Can anyone clarify this? Can I increase this limit? upd: Sorry, forgot to mention, I'm getting StackOverflowException: An unhandled exception of type 'System.StackOverflowException' occurred in System.Core.dll {Cannot evaluate expression because the current thread is in a stack overflow state.} You are legitimately running into a limit on the stack size

Is there any kind of performance or other difference between following two cases of accessing a global variable in a closure: Case 1: $closure = function() use ($global_variable) { // Use $global_variable to do something. } Case 2: $closure = function() { global $global_variable; // Use $global_variable to do something. } There is an important difference between your two examples: $global_variable = 1; $closure = function() use ($global_variable) { return $global_variable; }; $closure2 = function() { global $global_variable; return $global_variable; }; $global_variable = 99; echo $closure(); /