Benchmark: lodash partition vs forEach with array push vs two segregated push with "some" ordered 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 sortedIndexTbl = indexTbl.sort((a,b)=>a - b);
var tabl = Array.from({ length: 1000000 }).map((value, i) => i);

Tests:

Lodash partition - Unsorted
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));
Lodash partition - Sorted
let result = _.partition(tabl, v => sortedIndexTbl.some(i=>i==v));
forEach - sorted
let a = [], b = []; let result = tabl.forEach(item => {if (sortedIndexTbl.some(i=>i==item)) {a.push(item)} else {b.push(item)}})
doublefilter - sorted
const a = tabl.filter(item => sortedIndexTbl.some(i=>i==item)); const b = tabl.filter(item => !sortedIndexTbl.some(i=>i==item));

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash partition - Unsorted
forEach
double filter
Lodash partition - Sorted
forEach - sorted
doublefilter - sorted

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36

Browser/OS: Chrome 96 on Windows

View result in a separate tab

Test name	Executions per second
Lodash partition - Unsorted	4.2 Ops/sec
forEach	3.6 Ops/sec
double filter	2.1 Ops/sec
Lodash partition - Sorted	4.6 Ops/sec
forEach - sorted	4.0 Ops/sec
doublefilter - sorted	2.2 Ops/sec

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

Comparing performance of: Lodash partition - Unsorted vs forEach vs double filter vs Lodash partition - Sorted vs forEach - sorted vs doublefilter - sorted

Created: 2 years ago by: Registered User

Jump to the latest result

Lodash partition - Unsorted

forEach

double filter

Lodash partition - Sorted

forEach - sorted

doublefilter - sorted

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A