Run results for: FlatMap method vs for loop asdas

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36

Browser: Chrome 143

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 7 months ago

for loop

8.1M/s

flatMap

832K/s

View exact numbers

Test name	Executions per second
✓ for loop	8,110,314 Ops/sec
flatMap	831,973 Ops/sec

Script Preparation code:

var arr = Array(50).fill(0);

Tests:

flatMap
arr.flatMap(x => [x, x * 2]);
for loop
const n = arr.length; const acc = new Array(n * 2); for (let i = 0; i < n; i++){ const x = arr[i]; acc[i * 2] = x; acc[i * 2 + 1] = x * 2; }