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Run results for:
lodash uniq vs Array.from(new Set()) vs spread new Set() vs for vs for memory optimized
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=486513" width="100%" height="500px"></iframe>
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 memory optimized
1390.7M/s
For
1390.3M/s
use lodash
5.4M/s
Spread
2.7M/s
Array.from
2.2M/s
View exact numbers
Test name
Executions per second
✓
For memory optimized
1,390,702,208 Ops/sec
For
1,390,301,824 Ops/sec
use lodash
5,422,524 Ops/sec
Spread
2,730,214 Ops/sec
Array.from
2,182,405 Ops/sec
HTML Preparation code:
<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js'></script>
Tests:
Spread
return [...new Set([1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7])]
use lodash
return _.uniq([1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7]);
Array.from
return Array.from( new Set([1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7]) );
For
const visited = {}; const uniques = []; const initial = [1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7]; 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 = [1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7]; for(let i=0;i<initial.lenght;i++){ if(!(initial[i] in visited)) { visited[initial[i]] = undefined; uniques.push(initial[i]); } } return uniques