Run results for: difference vs Set

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36

Browser: Chrome 108

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
_difference	82219.2 Ops/sec
Set/Filter	449267.8 Ops/sec

HTML Preparation code:

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

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

Script Preparation code:

var arr1 = [];
for(let i = 0; i < 100; i++) {
  arr1.push('' + i);
}

var arr2 = [];
for(let i = 49; i >= 0; i--) {
  arr2.push('' + i);
}

​x
 
var arr1 = [];for(let i = 0; i < 100; i++) {  arr1.push('' + i);}​var arr2 = [];for(let i = 49; i >= 0; i--) {  arr2.push('' + i);}

Tests:

_difference
const finalArray = _.difference(arr1, arr2)
const finalArray = _.difference(arr1, arr2)
Set/Filter
const set2 = new Set([...arr2]); const finalArray = arr1.filter(value => !set2.has(value));
const set2 = new Set([...arr2]);
const finalArray = arr1.filter(value => !set2.has(value));