Top "Closures" questions

Doesn't JavaScript support closures with local variables?

I am very puzzled about this code: var closures = []; function create() { for (var i = 0; i < 5; i++) { closures[i] = function() { …

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Detecting first and last item inside a Groovy each{} closure

I am using Groovy's handy MarkupBuilder to build an HTML page from various source data. One thing I am struggling …

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What exactly does "closure" refer to in JavaScript?

I understand what closures are, but I am having some trouble grokking exactly what the term closure refers to. I …

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Swift 4: Cannot convert value of type '(_) -> ()' to expected argument type '() -> ()' or Argument passed to call that takes no arguments

Using XCode 9, Beta 3. Swift 4. statsView.createButton("Button name") { [weak self] Void in //stuff stuff self?.doSomething() } I get hundreds of …

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What are free variables?

Javascript closure definition says : A "closure" is an expression (typically a function) that can have free variables together with an …

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Performance difference between Java 8 lambdas and anonymous inner classes

Before Java 8, lambda functionality could be achieved by using anonymous inner classes. For example: interface Lambda { void doStuff(); } // ... public void …

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How does a function in a loop (which returns another function) work?

I've been trying to assign a function to onclick event of a dynamically created "a" tag in JavaScript. All of …

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How to call a method n times in Scala?

I have a case where I want to call a method n times, where n is an Int. Is there …

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@noescape attribute in Swift 1.2

There is a new attribute in Swift 1.2 with closure parameters in functions, and as the documentation says: This indicates that …

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How to dynamically define a class method which will refer to a local variable outside?

class C end var = "I am a local var outside" C.class_eval do def self.a_class_method puts …

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