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Run results for:
flatMap() vs filter().map() vs foreach and push
flatMap vs filter map
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Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36
Browser:
Chrome 126
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
filter().map()
545.1 Ops/sec
flatMap()
618.0 Ops/sec
foreach & push
951.8 Ops/sec
Script Preparation code:
var arr = []; var i = 0; while (i <= 1E5) arr[i] = i++;
Tests:
filter().map()
var result = arr.filter(x => x % 3).map(x => x/100)
flatMap()
var result = arr.flatMap(x => x % 3 ? x/100 : [])
foreach & push
var result = []; arr.forEach(x => { if (x%3) { result.push(x/100) } })