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flatMap vs reduce with spread vs reduce with concat
(version: 1)
Comparing performance of:
reduce with spread vs flatMap vs reduce with concat
Created:
one year ago
by:
Guest
Go to the latest result
Script Preparation code:
var arr = Array(10_000).fill(0)
Tests:
reduce with spread
arr.reduce((acc, x) => [...acc, x, x], [])
flatMap
arr.flatMap(x => [x, x])
reduce with concat
arr.reduce((acc, x) => acc.concat(x, x), [])
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
Fork
Test case name
Result
reduce with spread
flatMap
reduce with concat
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Browser/OS:
Chrome 131 on Mac OS X 10.15.7
View result in a separate tab
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=575464" width="100%" height="500px"></iframe>
flatMap
5K/s
reduce with spread
20/s
reduce with concat
7/s
View exact numbers
Test name
Executions per second
✓
flatMap
4,849 Ops/sec
reduce with spread
20 Ops/sec
reduce with concat
7 Ops/sec
Related benchmarks
flatMap vs reduce
flatMap vs reduce with desctructuring vs reduce without desctructuring
flatMap vs reduce (concat) vs reduce (spread) vs reduce (push)
flatMap vs reduce flattern array
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