currying_functions_multiply_all_elements_in_an_array.js

// Description:
// To complete this Kata you need to make a function multiplyAll/multiply_all which takes an array of integers as an argument. This function must return another function, which takes a single integer as an argument and returns a new array.
// The returned array should consist of each of the elements from the first array multiplied by the integer.
// Example:
// multiplyAll([1, 2, 3])(2) = [2, 4, 6];

// SOLUTION:

function multiplyAll(arr) {
    return function (a) {
        return arr.map(el => el * a);
    };
}