Closure Because of What it Can Do or Because it Does

Question

Ok, this is a bit of a pedantic question but I\'d like to make sure I\'m understanding the definition correctly. Is the closure moniker used to describe anonymous functions that

Answer 1

One great definition of a closure is defined here: lua.org

When a function is written enclosed in another function, it has full access to local variables from the enclosing function; this feature is called lexical scoping. Although that may sound obvious, it is not. Lexical scoping, plus first-class functions, is a powerful concept in a programming language, but few languages support that concept.