Benchmark: lodash partition vs forEach with array push vs two "some" filter loops

HTML Preparation code:

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

Script Preparation code:

var indexTbl = Array.from({ length: 50 }).map((value, i) => Math.ceil(Math.random()*1000));
var tabl = Array.from({ length: 1000000 }).map((value, i) => i);

Tests:

Lodash partition
let result = _.partition(tabl, v => indexTbl.some(i=>i==v))
forEach
let a = [], b = []; let result = tabl.forEach(item => {if (indexTbl.some(i=>i==item)) {a.push(item)} else {b.push(item)}})
double filter
const a = tabl.filter(item => indexTbl.some(i=>i==item)); const b = tabl.filter(item => !indexTbl.some(i=>i==item));

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash partition
forEach
double filter

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36

Browser/OS: Chrome 103 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Lodash partition	10.2 Ops/sec
forEach	9.0 Ops/sec
double filter	5.0 Ops/sec

lodash partition vs forEach with array push vs two "some" filter loops (version: 0)

Comparing performance of: Lodash partition vs forEach vs double filter

Created: 2 years ago by: Guest

Jump to the latest result

Lodash partition

forEach

double filter

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A