JS benefits of using reduce over for loop

Question

I'm wondering if there are any benefits for using reduce over the for loop. (except for it's shorter)

Let's take, for example, the sum function.

function sum(arr) {
   return arr.reduce((acc, current) => acc + current, 0);
}

Or with for.

function sum(arr) {
  let total = 0;
  for (let i = 0; i < arr.length; i++){
    total += arr[i];
  }
  return total;
}

`for-loop` it's always faster in comparison to anything, period! :-).. The benefit of `reduce`: readability. — Ele, Jan 27 '18 at 20:27

score 0 · Answer 1 · answered Jan 27 '18 at 20:22

0

Aside from brevity, as you mentioned, it also helps in readability: reduce is explicit in what it does whereas a for loop is generic.

Performance wise reduce is generally slower, especially if using an anonymous function.

answered Jan 27 '18 at 20:22

displaynamevalue

Especially if using an anonymous function? Can you explain? – undefined Jan 27 '18 at 20:24

1 Answers1