Run results for: Lodash partition VS native reduce without cloning array

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.0.0 Safari/537.36

Browser: Chrome 148

Operating system: Linux

Device Platform: Desktop

Date tested: one month ago

Native reduce

250K/s

Lodash

191K/s

View exact numbers

Test name	Executions per second
✓ Native reduce	249,590 Ops/sec
Lodash	190,725 Ops/sec

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.21/lodash.min.js'></script>

Script Preparation code:

var arr = [];

for (i = 0; i < 1000; i++) {
  arr[i] = i;
}

Tests:

Lodash
var [met, rest] = _.partition(arr, function(i) { return i % 2 === 0 });
Native reduce
var [met, rest] = arr.reduce(function(acc, i) { if(i % 2 === 0) { acc[0].push(i) } else { acc[1].push(i) } return acc }, [[], []])