Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
remove with splice vs filter
(version: 0)
Comparing performance of:
splice vs filter
Created:
5 years ago
by:
Guest
Jump to the latest result
Tests:
splice
let array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 20, 24, 26, 28, 27, 24, 23, 52, 45, 874, 56]; let value = array[Math.round(Math.random()*26)]; let index = array.indexOf(value); if(index !== -1) array.splice(index, 1);
filter
let array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 20, 24, 26, 28, 27, 24, 23, 52, 45, 874, 56]; let val = array[Math.round(Math.random()*26)]; array = array.filter(value => value !== val)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
splice
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):
Let's break down the provided benchmark and explain what is being tested, compared, and their pros and cons. **Benchmark Overview** The benchmark measures the performance of two different approaches to remove an element from an array: using `splice` versus `filter`. The test case creates a large array with 52 elements and selects a random value from it. If the selected value exists in the array, it removes that element from the array. **Approaches Compared** 1. **Splice**: This method modifies the original array by removing the specified element at the specified index. 2. **Filter**: This method creates a new array with all elements that do not match the provided function. **Pros and Cons of Each Approach** * **Splice**: + Pros: Can be more efficient for large arrays since it only requires updating indices, whereas `filter` creates a new array. + Cons: Modifies the original array, which can have unintended consequences if used in certain contexts. Also, can lead to performance issues if not done correctly due to caching and recompilation. * **Filter**: + Pros: Non-modifying, so it preserves the original array. Also, allows for more flexibility since the resulting array is a new object with no references to the original array. + Cons: Creates a new array, which can lead to increased memory usage and slower performance due to copying elements. **Library Used** In this benchmark, neither `splice` nor `filter` uses any external libraries. They are built-in JavaScript methods. **Special JS Features/Syntax** None of the test cases use any special JavaScript features or syntax that would require additional explanation. The focus is solely on comparing the performance of these two array removal approaches. **Other Alternatives** If you were to implement a different approach for removing elements from an array, some alternatives could include: * Using `map` and `concat`: Create a new array with all elements except the one to be removed. * Using `reduce`: Accumulate the remaining elements into a single array. * Using a custom function: Write a custom function that iterates through the array and removes elements using a different method. However, in this specific benchmark, these alternatives are not being compared, so it's best to stick with the original `splice` and `filter` approaches.
Related benchmarks:
Remove by splice vs spliceIdx vs filter
splice(indexof()) vs filter
Lodash filter vs splice removing item from array
Deleting using .splice vs .filter
Remove by splice vs filter with a known index
Comments
Confirm delete:
Do you really want to delete benchmark?