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Run results for:
flatMap vs flat+map
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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Browser:
Chrome 130
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
flatmap
4K/s
map+flat
3K/s
View exact numbers
Test name
Executions per second
✓
flatmap
4,071 Ops/sec
map+flat
3,162 Ops/sec
Script Preparation code:
var arr = Array(10_000).fill(0)
Tests:
flatmap
arr.flatMap((x) => [x, x])
map+flat
arr.map((x) => [x, x]).flat()