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Run results for:
flatMap vs filter.map vs reduce (2)
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/123.0.0.0 Safari/537.36
Browser:
Chrome 123
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
filter().map()
52.7 Ops/sec
flatMap()
50.9 Ops/sec
reduce()
52.1 Ops/sec
Script Preparation code:
var arr = []; var i = 0; while (i <= 1E5) arr[i] = i++;
Tests:
filter().map()
arr.filter(x => x !== 0 && x % 3 && x !== 666).map(x => Math.round(x * Math.sqrt(x/100)))
flatMap()
arr.flatMap(x => (x !== 0 && x % 3 && x !== 666) ? Math.round(x * Math.sqrt(x/100)) : [])
reduce()
arr.reduce((acc, x) => { if (x !== 0 && x % 3 && x !== 666) { acc.push(Math.round(x * Math.sqrt(x/100))) } return acc }, [])