Tell us what’s happening:
Could someone please tell me what is the purpose of the zero in this part of the code: ((a, b) => a + b, 0)?
Your code so far
const sum = (function() {
"use strict";
return function sum(x, y, z) {
const args = [ x, y, z ];
return args.reduce((a, b) => a + b, 0);
};
})();
console.log(sum(1, 2, 3)); // 6
Your browser information:
User Agent is: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:64.0) Gecko/20100101 Firefox/64.0
.
Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/es6/use-the-rest-operator-with-function-parameters/