Run results for: Difference between lists vs filtering on property

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36

Browser: Chrome 113

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
2 lists, difference between lists	7.1 Ops/sec
1 list, filtering on selected property	53422.8 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>

Script Preparation code:

var allItems = Array(1000).fill().map((_, i) => ({ id: i, selected: i % 2 == 0 }));
var selectedItems = allItems.filter((_, i) => i % 2 == 0);

Tests:

2 lists, difference between lists
const newListDiff = _.differenceWith(allItems, selectedItems, _.isEqual); console.log({newListDiff})
1 list, filtering on selected property
const newListFilter = allItems.filter(item => !item.selected); console.log({newListFilter});