Top "Closures" questions

A closure is a first-class function that refers to (closes over) variables from the scope in which it was defined.

Closure in Java 7

What is closure? It is supposed to be included in Java 7. (Closures were discussed for inclusion in Java 7, but in …

java closures
Python nonlocal statement

What does the Python nonlocal statement do (in Python 3.0 and later)? There's no documentation on the official Python website and …

python closures global python-nonlocal
JavaScript closures vs. anonymous functions

A friend of mine and I are currently discussing what is a closure in JS and what isn't. We just …

javascript scope closures
groovy: safely find a key in a map and return its value

I want to find a specific key in a given map. If the key is found, I then want to …

dictionary groovy closures
What is a practical use for a closure in JavaScript?

I'm trying my hardest to wrap my head around JavaScript closures. I get that by returning an inner function, it …

javascript closures terminology
Passing parameters in Javascript onClick event

I'm trying to pass a parameter in the onclick event. Below is a sample code: <div id="div">&…

javascript closures
var self = this?

Using instance methods as callbacks for event handlers changes the scope of this from "My instance" to "Whatever just called …

javascript jquery scope closures
Store a closure as a variable in Swift

In Objective-C, you can define a block's input and output, store one of those blocks that's passed in to a …

swift closures objective-c-blocks
Exception: Serialization of 'Closure' is not allowed

So I am not sure exactly what I would have to show you guys, how ever if you need more …

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Why aren't python nested functions called closures?

I have seen and used nested functions in Python, and they match the definition of a closure. So why are …

python closures nested-function