Benchmark: Remove by splice vs copyWithin vs filter (readonly)

HTML Preparation code:

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</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) {
    const arr2 = [...array]
  	arr2.splice( index, 1 );
    array = arr2
  }
}

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 );
}

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" );

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

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Latest run results:

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

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:92.0) Gecko/20100101 Firefox/92.0

Browser/OS: Firefox 92 on Linux

View result in a separate tab

Test name	Executions per second
Delete by Splice	101796.0 Ops/sec
Delete by copyWithin	611208.1 Ops/sec
Delete by Filter	124494.1 Ops/sec

Related benchmarks:

Remove by splice vs copyWithin vs filter (readonly) (version: 0)

Deletion of an element from an array.

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

Created: 3 years ago by: Guest

Jump to the latest result

Delete by Splice

Delete by copyWithin

Delete by Filter

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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