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- functional programming - What is a Closure? - Stack Overflow
I asked a question about Currying and closures were mentioned What is a closure? How does it relate to currying?
- What is the difference between a closure and a lambda?
And here comes the closure part: The closure of a lambda expression is this particular set of symbols defined in the outer context (environment) that give values to the free symbols in this expression, making them non-free anymore
- What are closures in C#? - Stack Overflow
A closure in C# takes the form of an in-line delegate anonymous method A closure is attached to its parent method meaning that variables defined in parent's method body can be referenced from within the anonymous method Example: public Person FindById(int id) { return this Find(delegate(Person p) { return (p Id == id); }); } You could also take a look at Martin Fowler or Jon Skeet blogs I
- Type hinting – Difference between `Closure` and `callable`
Note for readers of this question and the answers herein: there are some references to Callback (upper case) This is incorrect It's just callback (lower case), which is a type hint It's not a class Conversely, Closure is an actual class that exists in the global namespace, and should therefore be capitalised
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