Benchmark: Remove by splice vs copyWithin vs filter vs set.delete

HTML Preparation code:

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  var set = new Set(array);
</script>

Script Preparation code:

/* these functions assume that only one element matches, so they do not loop! */

function deleteBySplice (array, element) {
  var index = array.indexOf( element );
  if (index !== -1) {
  	array.splice( index, 1 );
  }
}

function deleteByCopyWithin (array, element) {
  var index = array.indexOf( element );
  if (index !== -1) {
  	array.copyWithin( index, index + 1 );
    --array.length;
  }
}

function deleteByFilter (array, element) {
  array = array.filter( el => el !== element );
}

function deleteBySet (set, element) {
  set.delete(element)
}

Tests:

Delete by Splice
deleteBySplice( array, "uyjxmtqnrzvj7mkyqmtoqolxr" ); deleteBySplice( array, "m1c6kzws0iubt8g0zlsug14i" ); deleteBySplice( array, "4wlivut0n1ht80rs5lyf7ds4i" );
Delete by copyWithin
deleteByCopyWithin( array, "uyjxmtqnrzvj7mkyqmtoqolxr" ); deleteByCopyWithin( array, "m1c6kzws0iubt8g0zlsug14i" ); deleteByCopyWithin( array, "4wlivut0n1ht80rs5lyf7ds4i" );
Delete by Filter
deleteByFilter( array, "uyjxmtqnrzvj7mkyqmtoqolxr" ); deleteByFilter( array, "m1c6kzws0iubt8g0zlsug14i" ); deleteByFilter( array, "4wlivut0n1ht80rs5lyf7ds4i" );
Delete by Set
deleteBySet( set, "uyjxmtqnrzvj7mkyqmtoqolxr" ); deleteBySet( set, "m1c6kzws0iubt8g0zlsug14i" ); deleteBySet( set, "4wlivut0n1ht80rs5lyf7ds4i" );

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Delete by Splice
Delete by copyWithin
Delete by Filter
Delete by Set

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:135.0) Gecko/20100101 Firefox/135.0

Browser/OS: Firefox 135 on Mac OS X 10.15

View result in a separate tab

Delete by Set

44.6M/s

Delete by copyWithin

1.2M/s

Delete by Splice

1.2M/s

Delete by Filter

251K/s

View exact numbers

Test name	Executions per second
✓ Delete by Set	44,593,720 Ops/sec
Delete by copyWithin	1,173,425 Ops/sec
Delete by Splice	1,173,275 Ops/sec
Delete by Filter	251,074 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

Remove by splice vs copyWithin vs filter vs set.delete (version: 0)

Deletion of an element from an array.

Comparing performance of: `Delete by Splice vs Delete by copyWithin vs Delete by Filter vs Delete by Set`

Created: 5 years ago by: Guest

Go to the latest result

Delete by Splice

Delete by copyWithin

Delete by Filter

Delete by Set

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

Remove by splice vs copyWithin vs filter vs set.delete (version: 0)

Deletion of an element from an array.

Comparing performance of: Delete by Splice vs Delete by copyWithin vs Delete by Filter vs Delete by Set

Created: 5 years ago by: Guest

Go to the latest result

Delete by Splice

Delete by copyWithin

Delete by Filter

Delete by Set

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

Related benchmarks

Comparing performance of: `Delete by Splice vs Delete by copyWithin vs Delete by Filter vs Delete by Set`