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Run results for:
Benchmark: flatMap vs reduce vs while vs foreach vs for of
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=608240" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36
Browser:
Chrome 136
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
for of
338K/s
foreach
326K/s
for
283K/s
while
275K/s
flatMap
42K/s
reduce
2K/s
View exact numbers
Test name
Executions per second
✓
for of
337,899 Ops/sec
foreach
325,830 Ops/sec
for
282,629 Ops/sec
while
274,579 Ops/sec
flatMap
42,258 Ops/sec
reduce
1,628 Ops/sec
Script Preparation code:
var n = Array.from(Array(1000).keys())
Tests:
flatMap
n.flatMap((x,i) => [++i,i++])
reduce
n.reduce((acc, cur) => [...acc, ++cur, cur++], [])
while
let res = [], i=0; while(n.length>i++) res.push(i, i);
foreach
let res = []; n.forEach((_,i) => res.push(i+1, i+1))
for
let res = []; for (let i = 0; i < n.length; i++) { res.push(i+1, i+1) }
for of
let res = []; for (const i of n) { res.push(i+1, i+1) }