Benchmark: unique set or object

Script Preparation code:

var a = new Array(10000).fill(0).map(() => Math.floor(Math.random() * 10000));
var b = new Array(10000).fill(0).map(() => Math.floor(Math.random() * 10000).toString(32));

Tests:

Set number
var u = [...new Set(a).keys()]
Object number
var u = Object.values(a.reduce( (res, k) => { res[k] ??= k; return res; },{} ));
object filter number
const f = new Set(); return a.filter((v) => (f.has(v) ? false : f.add(v)));
Set string
var u = [...new Set(b).keys()]
Object string
var u = Object.values(b.reduce( (res, k) => { res[k] ??= k; return res; },{} ));
object filter string
const f = new Set(); return b.filter((v) => (f.has(v) ? false : f.add(v)));

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Set number
Object number
object filter number
Set string
Object string
object filter string

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 20 days ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36

Browser/OS: Chrome 124 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Set number	3685.0 Ops/sec
Object number	3575.7 Ops/sec
object filter number	3104.1 Ops/sec
Set string	2990.0 Ops/sec
Object string	804.5 Ops/sec
object filter string	2513.7 Ops/sec

unique set or object (version: 6)

Comparing performance of: Set number vs Object number vs object filter number vs Set string vs Object string vs object filter string

Created: 20 days ago by: Registered User

Jump to the latest result

Set number

Object number

object filter number

Set string

Object string

object filter string

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A