Benchmark: unique_array_reduce

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

let groups = [];
for (let i = 0, lengthI = 10000; i < lengthI; ++i) {
    const group = [];
    for (let j = 0, lengthJ = 10000; j < lengthJ; ++j) {
        group.push(j % 2 ? 'a' : 'b');
    }
    groups.push(group);
}

Tests:

reduce
Array.from(groups.reduce((set, group) => { group.forEach(value => set.add(value)); return set; }, new Set()));
unify
const mySet = new Set(); groups.forEach(group => group.forEach(value => mySet.add(value))); return Array.from(mySet);

Historical Performance Data aggregated from 5 community runs

Desktop Results:

Chrome 5 runs

unify

2/s

reduce

2/s

View exact numbers

✓ unify: 2 ops/sec
• reduce: 2 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
reduce
unify

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36

Browser/OS: Chrome 142 on Linux

View result in a separate tab

reduce

3/s

unify

3/s

View exact numbers

Test name	Executions per second
✓ reduce	3 Ops/sec
unify	3 Ops/sec

unique_array_reduce (version: 3)

Comparing performance of: `reduce vs unify`

Created: one year ago by: Registered User

Go to the latest result

reduce

unify

Historical Performance Data aggregated from 5 community runs

Desktop Results:

Chrome 5 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

unique_array_reduce (version: 3)

Comparing performance of: reduce vs unify

Created: one year ago by: Registered User

Go to the latest result

reduce

unify

Historical Performance Data aggregated from 5 community runs

Desktop Results:

Chrome 5 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `reduce vs unify`