quick question

Question

Hey guys,
can you please explain to me what does it mean
closure[0](6)
what exactly mean having [] and () next to each other?

Answer 1

I'm not quite sure but maybe the closure array's first element (index 0) is a function that takes 1 argument.

for example
const foo = (val) => {
console.log(val);
}

const arr = [foo, 10, 20];
arr[0](6);

Answer 2

Khaled, that is how you pass argument to a function.

function foo(a) {
console.log(a);
}

//In simple function call we do it like this
foo(6);

But since our function is part of that array, we call it that way.

Answer 3

Got you Rick, Thank you so much ^^

Answer 4

yes Rick the closure arguments are a function and integer.
I could not understand what the (6) means.