Benchmark: Uniq by vs Set - MeasureThat.net

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Tests:

UniqBy
const a = [{a:1},{a:1},{a:1},{a:2},{a:2},{a:3}] const uniques = _.uniqBy(a, 'a')
Set
const a = [{a:1},{a:1},{a:1},{a:2},{a:2},{a:3}] const uniques = []; const set = new Set(); for (const e of a) { if(!set.has(e.a)) { uniques.push(e); set.add(e.a); } }

Rendered benchmark preparation results:

Previous results

Test case name	Result
UniqBy
Set

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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/97.0.4692.71 Safari/537.36

Browser/OS: Chrome 97 on Windows

Test name	Executions per second
UniqBy	3449858.0 Ops/sec
Set	3928417.0 Ops/sec

Uniq by vs Set (version: 0)