Benchmark: Unshift vs Union

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 arr = [];
for(var i = 0; i < 100000; i++){
  arr.push({value:getRandomInt(100)});
}

Tests:

unshift
arr.unshift(51, 345)
_.union
_.union(arr, [51, 345])

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
unshift
_.union

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0) Gecko/20100101 Firefox/86.0

Browser/OS: Firefox 86 on Windows

View result in a separate tab

Test name	Executions per second
unshift	283614.4 Ops/sec
_.union	3.6 Ops/sec

Unshift vs Union (version: 0)

Comparing performance of: unshift vs _.union

Created: 3 years ago by: Guest

Jump to the latest result

unshift

_.union

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A