Benchmark: Unique Array: Lodash vs spread new Set vs reduce vs for - random data

HTML Preparation code:

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

Script Preparation code:

function getRandomInt(max) {
    return Math.floor(Math.random() * Math.floor(max));
}

var testArr = [];
for (var i = 0; i < 100000; i++) {
    testArr.push(String(getRandomInt(1000)));
}

Tests:

Array Unique
const { resultArray } = testArr.reduce((result, item) => { if(!result.resultMap[item]){ result.resultMap[item] = true; result.resultArray.push(item) } return result; }, {resultArray: [], resultMap: {}}); return resultArray;
For Loop
const resultArray = []; const resultMap = {}; for(let item of testArr) { if(!resultMap[item]){ resultMap[item] = true; resultArray.push(item) } } return resultArray;
Array from Set
[...new Set(testArr)]
Lodash Uniq
_.uniq(testArr)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array Unique
For Loop
Array from Set
Lodash Uniq

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.5 Safari/605.1.15

Browser/OS: Safari 15 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Array Unique	246.6 Ops/sec
For Loop	262.9 Ops/sec
Array from Set	196.9 Ops/sec
Lodash Uniq	169.6 Ops/sec

Unique Array: Lodash vs spread new Set vs reduce vs for - random data (version: 0)

Comparing performance of: Array Unique vs For Loop vs Array from Set vs Lodash Uniq

Created: 2 years ago by: Registered User

Jump to the latest result

Array Unique

For Loop

Array from Set

Lodash Uniq

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A