Benchmark: Remove by splice vs copyWithin vs filter big

HTML Preparation code:

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  for(var i=0;i<14;i++)array=array.concat(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 );
}

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

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

Based on the provided benchmark results, I will make an educated guess about which JavaScript method is the fastest.

The benchmark results show:

1. `deleteBySplice` with 48.11 executions per second (fps)
2. `deleteByFilter` with 1.60 fps
3. `deleteByCopyWithin` with 1.29 fps

It appears that `deleteBySplice` is the fastest method, followed by `deleteByFilter`, and then `deleteByCopyWithin`.

This makes sense because:

* `deleteBySplice` only requires a single operation to delete an element from the array, making it a simple and efficient method.
* `deleteByFilter` involves creating a new array with filtered elements, which can be slower due to the extra memory allocation and iteration required.
* `deleteByCopyWithin` also involves creating a new array by copying elements from one index to another, which can be slower than using `splice` or other methods that directly modify the original array.

Keep in mind that this is just an educated guess based on the provided benchmark results. The actual performance of each method may vary depending on the specific use case and implementation details.

Related benchmarks:

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

Deletion of an element from an array.

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

Created: 6 years ago by: Guest

Jump to the latest result

Delete by Splice

Delete by copyWithin

Delete by Filter

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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