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flatMap() vs filter().map() vs reduce() push vs reduce() spread
(version: 1)
flatMap vs filter map vs reduce()
Comparing performance of:
filter().map() vs flatMap() vs reduce() push vs reduce() spread
Created:
one year ago
by:
Guest
Jump to the latest result
Script Preparation code:
var arr = []; var i = 0; while (i <= 1E5) arr[i] = i++; var short = arr.filter(x => x <= 1e4);
Tests:
filter().map()
arr.filter(x => x % 12).filter(x => x % 5).filter(x => x % 3).map(x => x/100)
flatMap()
arr.flatMap(x => x % 12 && x % 5 && x % 3 ? x/100 : [])
reduce() push
arr.reduce((newArray, x) => { if (x % 12 && x % 5 && x % 3) { newArray.push(x / 100) } return newArray }, [])
reduce() spread
short.reduce((newArray, x) => { if (x % 12 && x % 5 && x % 3) { return [...newArray, x / 100] } return newArray }, [])
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (4)
Previous results
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Test case name
Result
filter().map()
flatMap()
reduce() push
reduce() spread
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36
Browser/OS:
Chrome 135 on Windows
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Test name
Executions per second
filter().map()
268.8 Ops/sec
flatMap()
580.7 Ops/sec
reduce() push
597.8 Ops/sec
reduce() spread
44.1 Ops/sec
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