Run results for: i hate l00ps

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 123

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

functional

395/s

functional but better

380/s

imperative

258/s

View exact numbers

Script Preparation code:

var numbers = Array.from({ length: 10_000 }).map(() => Math.random())

Tests:

functional
const result = numbers .map(n => Math.round(n * 10)) .filter(n => n % 2 === 0) .reduce((a, n) => a + n, 0)
imperative
let result = 0 for (let i = 0; i < numbers.length; i++) { let n = Math.round(numbers[i] * 10) if (n % 2 !== 0) continue result = result + n }
functional but better
const round = n => Math.round(n * 10) const isEven = n => n % 2 === 0 const result = numbers .reduce((a, n) => { n = round(n) return isEven(n) ? a + n : a; }, 0)