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flatMap() vs filter().map() 999
(version: 1)
flatMap vs filter map
Comparing performance of:
filter().map() vs flatMap()
Created:
one year ago
by:
Guest
Go to the latest result
Script Preparation code:
var arr = []; var i = 0; while (i <= 1E5) arr[i] = i++;
Tests:
filter().map()
arr.filter(x => x % 3).map(x => x/100)
flatMap()
arr.flatMap(x => x % 3 ? [x/100] : [])
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
filter().map()
flatMap()
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/131.0.0.0 Safari/537.36
Browser/OS:
Chrome 131 on Windows
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<iframe src="https://measurethat.net/Embed?id=569269" width="100%" height="500px"></iframe>
filter().map()
457/s
flatMap()
391/s
View exact numbers
Test name
Executions per second
✓
filter().map()
457 Ops/sec
flatMap()
391 Ops/sec
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