Run results for: Lodash Sum vs ApSum

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; M2006C3MNG) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 103

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
Lodash sum	2.6 Ops/sec
Ap Sum	3.4 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>

Script Preparation code:

function* generate(until) {
  let current = 0
  while(current < until) {
    yield 1 + (5 * current)
    current++
  }
}

function apSum(array) {
  const N = array.length
  const [a] = array
  const L = array[N - 1]
  return (N / 2) * (a + L)
}

function sum(array) {
  return _.sum(array)
}

function naiveSum(array) {
  array.reduce((total, current) => total += current, 0)
}

Tests:

Lodash sum
const data = [...generate(1000 * 1000)] sum(data)
Ap Sum
const data = [...generate(1000 * 1000)] apSum(data)

Run results for: Lodash Sum vs ApSum

Lodash sum

Ap Sum