Benchmark: Set from Array vs Array#forEach(.add)

Script Preparation code:

let sourceArray = []
for(let i=1; i<1000000; i++) {
 sourceArray.push(i) 
}

    class SetlikeArray extends Array {
       has(key) { return this.includes(key); }
       keys() { return this[Symbol.iterator]() }
       get size() { return this.length } 
    }

Tests:

new Set
const setObject = new Set(sourceArray)
.add
const setObject = new Set() sourceArray.forEach(x => setObject.add(x))
of
const setObject = new SetlikeArray(); for(let i=1; i<1000000; i++) { setObject.push(i) }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
new Set
.add
of

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 8 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36 OPR/122.0.0.0 (Edition developer)

Browser/OS: Opera 122 on Windows

View result in a separate tab

Test name	Executions per second
new Set	10.5 Ops/sec
.add	7.5 Ops/sec
of	18.4 Ops/sec

Related benchmarks:

Set from Array vs Array#forEach(.add) (version: 1)

Comparing performance of: new Set vs .add vs of

Created: 8 months ago by: Guest

Jump to the latest result

new Set

.add

of

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A