Benchmark: Unique Object Array

Script Preparation code:

let data = [];

for (let i = 0; i < 10000; i++) {
    data.push({
        id: generateId(4)
    });
}

function generateId(len) {
    return [...Array(len)]
        .map(i => (~~(Math.random() * 36)).toString(36))
        .join("");
}

Tests:

Reduce
const newDataReduce = Object.keys(data.reduce((acc, cur) => { if(acc[cur.id]) return acc; acc[cur.id] = true; return acc; }, {}));
Set Map
const newDataSet = Array.from(new Set(data.map(f => f.id)));
Set Simple For
const newDataSimpleFor = new Set(); for(let i = 0; i < data.length; i++){ if(newDataSimpleFor.has(data[i].id)) continue; newDataSimpleFor.add(data[i].id); } const res = Array.from(newDataSimpleFor);
Set For Of
const newDataForOf = new Set(); for(let dp of data){ if(newDataForOf.has(dp.id)) continue; newDataForOf.add(dp.id); } const res2 = Array.from(newDataForOf);
Set For Each
const newDataForEach = new Set(); data.forEach(dp => { if(newDataForEach.has(dp.id)) return; newDataForEach.add(dp.id); }); const res3 = Array.from(newDataForEach);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Reduce
Set Map
Set Simple For
Set For Of
Set For Each

Fastest: N/A

Slowest: N/A

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Unique Object Array (version: 0)

Make unique an array of objects based on a key

Comparing performance of: Reduce vs Set Map vs Set Simple For vs Set For Of vs Set For Each

Created: 3 years ago by: Guest

Jump to the latest result

Reduce

Set Map

Set Simple For

Set For Of

Set For Each

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

No previous run results