Run results for: lodash partition + concat vs two filter loops

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

double filter

28K/s

lodash partition + concat

15K/s

View exact numbers

Test name	Executions per second
✓ double filter	27,504 Ops/sec
lodash partition + concat	14,560 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var tabl = Array.from({ length: 10000 }).map((value, i) => i)

Tests:

lodash partition + concat
const [a, b] = _.partition(tabl, e => e % 2) const res = a.concat(b);
double filter
const res = [...tabl.filter(e => e % 2), ...tabl.filter(e => !e % 2)]