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<A brief introduction to closures ⁄ >




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In this post, I'm going to attempt to explain what closures are and how to use them. Many modern (and some not-so-modern) programming languages contain support for closures, but for the purposes of this article I'm going to be using JavaScript. I've chosen JavaScript for a few reasons:

- Ubiquity: If you have a web browser then you have a JavaScript interpreter
- Simplicity: JavaScript is conceptually a fairly simple language (especially if you limit yourself to its Good Parts), compared to other dynamic scripting languages such as Python and Ruby
- Familiarity: If you've used any of the C family of languages (e.g. C++, Java or C#) then JavaScript will look fairly familiar.

There may be some differences between languages with the mechanics, but deep down, closures are the same across all languages which allow them, so if you can understand the concept in JavaScript, you'll understand it in any capable language.



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http://skilldrick.co.uk/2010/11/a-brief-introduction-to-closures/




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