You can and Starring and Forking is free for you, but it tells me and other people that it was helpful and you like this tutorial. Extract the ZIP and open it. Unfortunately I don't have any more ...

A closure is a special type of function that allows us to access variables from its lexical scope at the time it was defined, even when the function is executed outside of that lexical scope. The ...

First-Class Functions: "A Programming language is said to have first-class functions if it treats functions as first-class citizens" First-Class Citizen (Programming): "A first-Class citizen ...