Benchmark: _.uniqueBy vs Set of two different objects

HTML Preparation code:

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

Script Preparation code:

var MyArr = Array.from(
  {
    length: 100,
  },
  () => {
    return {
      a: Math.floor(Math.random() * 500),
    };
  }
);

var MySecondArr = Array.from(
  {
    length: 100,
  },
  () => {
    return {
      a: Math.floor(Math.random() * 1000),
    };
  }
);

var myCopy = null;

Tests:

Set
const ids = new Set(MyArr.map((item) => item.a)) myCopy = MyArr.concat(MySecondArr.filter((item) => !ids.has(item.id)))
_.uniqBy
myCopy = _.uniqBy(MyArr.concat(MySecondArr), 'a');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Set
_.uniqBy

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 5 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36

Browser/OS: Chrome 142 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Set	405698.1 Ops/sec
_.uniqBy	191331.2 Ops/sec

Related benchmarks:

_.uniqueBy vs Set of two different objects (version: 2)

Comparing performance of: Set vs _.uniqBy

Created: 5 months ago by: Registered User

Jump to the latest result

Set

_.uniqBy

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A