atr

A extension to the at method that can also replace the element!

This can be used as a drop-in replacement for the at method, the only difference is that it takes the array as an argument.

Examples

let arr = [1,2,3,4]

// this replaces the last element with 3 and returns the last element, which would be 3
atr(arr, -1, 3)

// [1,2,3,3]
console.log(arr)

You can also just use it normally

let arr = [1,2,3,4];

// 4
console.log(atr(arr, -1));