What is a Closure?   A Closure is an inner function that makes reference to the environment... Tagged with javascript, python, functional, programming.

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Closures can be used in JavaScript, Python, Ruby, Swift, C#, Objective C and a few of other languages. A Closure is an inner function that makes reference to the environment in it's outer function. Closures have access to:Their local scope (variables defined inside the inner function) The scope of their outer functions The global scope

What are Closures good for?