Benchmark: Remove array element by index

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>

Script Preparation code:

const filterByIndex = (arr, index) => arr.filter((_, i) => i !== index);
const removeByIndex = (arr, index) => arr.slice(0, index).concat(arr.slice(index + 1));
const removeByIndex2 = (arr, index) => [...arr.slice(0, index), ...arr.slice(index + 1)];

const arr = Array.from({ length: 1000 }, (_, i) => i);
const index = 500;

Tests:

lodash pullAt
_.pullAt(arr, index);
filterByIndex
filterByIndex(arr, index);
removeByIndex (concat)
removeByIndex(arr, index);
removeByIndex2
removeByIndex2(arr, index);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash pullAt
filterByIndex
removeByIndex (concat)
removeByIndex2

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:134.0) Gecko/20100101 Firefox/134.0

Browser/OS: Firefox 134 on Mac OS X 10.15

View result in a separate tab

lodash pullAt

3.1M/s

removeByIndex (concat)

315K/s

removeByIndex2

161K/s

filterByIndex

152K/s

View exact numbers

Test name	Executions per second
✓ lodash pullAt	3,097,462 Ops/sec
removeByIndex (concat)	314,767 Ops/sec
removeByIndex2	160,800 Ops/sec
filterByIndex	151,549 Ops/sec

Remove array element by index (version: 1)

Comparing performance of: `lodash pullAt vs filterByIndex vs removeByIndex (concat) vs removeByIndex2`

Created: one year ago by: Guest

Go to the latest result

lodash pullAt

filterByIndex

removeByIndex (concat)

removeByIndex2

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Remove array element by index (version: 1)

Comparing performance of: lodash pullAt vs filterByIndex vs removeByIndex (concat) vs removeByIndex2

Created: one year ago by: Guest

Go to the latest result

lodash pullAt

filterByIndex

removeByIndex (concat)

removeByIndex2

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `lodash pullAt vs filterByIndex vs removeByIndex (concat) vs removeByIndex2`