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Run results for:
Lodash uniqBy vs Reduce uniqBy
Filtering array of objects by key
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=497692" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (iPhone; CPU iPhone OS 17_2_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/121.1 Mobile/15E148 Safari/605.1.15
Browser:
Mobile Safari 17
Operating system:
iOS 17.2.1
Device Platform:
Mobile
Date tested:
2 years ago
Benchmark engine:
Benchmark.js
Lodash
1.7M/s
Reduce
1.0M/s
View exact numbers
Test name
Executions per second
✓
Lodash
1,740,136 Ops/sec
Reduce
1,017,356 Ops/sec
HTML Preparation code:
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
Script Preparation code:
var testFiles = _.range(_.random(100)).map(x => ({ id: _.random(1, 10), }));
Tests:
Lodash
_.uniqBy(testFiles,"id")
Reduce
testFiles.reduce((accumulator, item) => { if (item === null) { return accumulator; } const keyExist = accumulator.some((i) => i["id"] === item["id"]); return keyExist === true ? accumulator : [...accumulator, item]; }, []);