Run results for: lodash uniq vs Array.from(new Set()) vs spread new Set() vs for vs for memory optimized 4

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Browser: Chrome 119

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

For

15.5M/s

For memory optimized

15.4M/s

use lodash

552/s

Array.from

546/s

Spread

539/s

View exact numbers

HTML Preparation code:


<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js'></script>

Script Preparation code:

var array = [];
for (let i = 0; i < 100000; i++) {array.push(~~(Math.random() * 2000))}

Tests:

Spread
return [...new Set(array)]
use lodash
return _.uniq(array);
Array.from
return Array.from( new Set(array) );
For
const visited = {}; const uniques = []; const initial = array; for(let i=0;i<initial.lenght;i++){ if(!visited[initial[i]]) { visited[initial[i]] = true; uniques.push(initial[i]); } } return uniques
For memory optimized
const visited = {}; const uniques = []; const initial = array; for(let i=0;i<initial.lenght;i++){ if(!(initial[i] in visited)) { visited[initial[i]] = undefined; uniques.push(initial[i]); } } return uniques