Run results for: iterators vs callbacks

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Safari/605.1.15

Browser: Safari 17

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 4 months ago

Test name	Executions per second
iterator	70.9 Ops/sec
callback	59.4 Ops/sec

Script Preparation code:

function* iterator(size) {
 	for (let i = 0; i < size; i++) {
      yield i;
    }
}

function callback(size, cb) {
  for (let i = 0; i < size; i++) {
    cb(i);
  }
}

var N = 100000;

Tests:

iterator
let sum = 0; for (const i of iterator(N)) { sum += i*Math.random(); }
callback
let sum = 0; callback(N, i => { sum += i*Math.random(); });