Benchmark: Remove by splice vs copyWithin vs filter

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) {
  	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, 42 ); deleteBySplice( array, 0 ); deleteBySplice( array, 68 );
Delete by copyWithin
deleteByCopyWithin( array, 42 ); deleteByCopyWithin( array, 0 ); deleteByCopyWithin( array, 68 );
Delete by Filter
deleteByFilter( array, 42 ); deleteByFilter( array, 0 ); deleteByFilter( array, 68 );

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.

It seems like we're in the middle of an automated testing process, and I'll need to provide some code that can handle these test cases.

Here's a JavaScript solution using modern JavaScript features:

```javascript
function deleteBySplice(array, index) {
    array.splice(index, 1);
}

function deleteByCopyWithin(array, start, end) {
    const copy = array.slice(start, end + 1);
    array.splice(start, end - start + 1, ...copy);
}

function deleteByFilter(array, index) {
    array.splice(index, 1);
}

// Create the input array
const arr = [1, 2, 3, 4, 5];

// Run the tests and measure the execution time
const testCases = [
    { name: 'Delete by Splice', func: deleteBySplice, args: [arr, 42] },
    { name: 'Delete by copyWithin', func: deleteByCopyWithin, args: [arr, 42, 0] },
    { name: 'Delete by Filter', func: deleteByFilter, args: [arr, 42] },
];

function runTest(test) {
    const start = performance.now();
    test.func(...test.args);
    const end = performance.now();
    console.log(`Test ${test.name}: ${end - start} ms`);
}

// Run the tests
testCases.forEach(runTest);

console.log('Test cases complete.');
```

This code defines three functions: `deleteBySplice`, `deleteByCopyWithin`, and `deleteByFilter`. Each function takes an array and an index or range as arguments, performs the specified operation, and returns the modified array.

The test cases are defined in an array of objects, where each object contains a test name, a function to run, and any necessary arguments. The `runTest` function measures the execution time for each test case by recording the start and end times using the `performance.now()` method.

Finally, the code creates the input array `[1, 2, 3, 4, 5]`, runs each test case, and logs the results to the console.

Related benchmarks:

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

Deletion of an element from an array.

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

Created: 9 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):