Run results for: Array filter vs Set delete

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Filter set1000

13.7M/s

Filter set10

12.8M/s

Filter set1000000

12.6M/s

Filter arr10

10.6M/s

Filter arr1000

738K/s

Filter arr1000000

107/s

View exact numbers

Test name	Executions per second
✓ Filter set1000	13,676,863 Ops/sec
Filter set10	12,822,477 Ops/sec
Filter set1000000	12,592,171 Ops/sec
Filter arr10	10,616,167 Ops/sec
Filter arr1000	738,149 Ops/sec
Filter arr1000000	107 Ops/sec

Script Preparation code:

function arrayWithLength(length) {
    return Array(length).fill().map((_, i) => i);
}
var arr10 = arrayWithLength(10);
var arr1000 = arrayWithLength(1000);
var arr1000000 = arrayWithLength(1000000);
var set10 = new Set(arr10);
var set1000 = new Set(arr1000);
var set1000000 = new Set(arr1000000);

Tests:

Filter arr10
arr10.filter(i => i === 5);
Filter set10
set10.delete(5);
Filter arr1000
arr1000.filter(i => i === 500);
Filter set1000
set1000.delete(500);
Filter arr1000000
arr1000000.filter(i => i === 500000);
Filter set1000000
set1000000.delete(500000);