Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Prueba array
(version: 0)
ushinf VS foreach+push
Comparing performance of:
Push y for vs usifht
Created:
6 years ago
by:
Guest
Jump to the latest result
HTML Preparation code:
Unshift
Tests:
Push y for
var newElement = 'a'; var arr = ['1', '2', '3', '5', '6', '7', '8', '9', '10']; var result = []; result.push(newElement) arr.forEach(e => result.push(e))
usifht
var newElement = 'a'; var arr = ['1', '2', '3', '5', '6', '7', '8', '9', '10']; var result = []; result = arr; result.unshift(newElement);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
Push y for
usifht
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):
I'll break down the provided benchmark and explain what's being tested, the options compared, pros and cons of each approach, and other considerations. **Benchmark Overview** The benchmark measures the performance difference between two approaches: using `push` with a loop (`forEach`) versus using `unshift` to add an element to an array. **Options Compared** There are two main options being tested: 1. **Push with Loop (forEach)**: This approach uses the `forEach` method to iterate over the array and push each element onto the result array. 2. **Unshift**: This approach uses the `unshift` method to add a single element at the beginning of the result array. **Pros and Cons** **Push with Loop (forEach)** Pros: * More flexible, as it can handle arrays of any size * Can be more efficient for large arrays, as it avoids unnecessary memory allocations Cons: * May have higher overhead due to the loop and function calls * Can be slower for smaller arrays, due to the additional iterations **Unshift** Pros: * Faster, as it only requires a single operation (adding an element at the beginning of the array) * More efficient for small arrays, as it avoids unnecessary iterations Cons: * Less flexible, as it's limited to adding elements at the beginning of the array * May require more memory allocation, depending on the size of the result array **Other Considerations** * **Memory Allocation**: Both approaches may have some memory allocation overhead, especially if the result arrays grow significantly. * **Browser Optimizations**: Some browsers may optimize their internal array implementation to reduce memory allocations or caching, which could impact performance. **Library Usage** None of the benchmark tests appear to use any external libraries. The code is self-contained and uses only built-in JavaScript features. **Special JS Features/Syntax** The benchmark tests do not require any special JavaScript features or syntax beyond what's available in standard JavaScript (ECMAScript 2020).
Related benchmarks:
Spread vs Push when copying array
Array .push() vs .unshift() vs spread
Pushing items via Array.push vs. Spread Operator
Array .push() vs .unshift() multiple
spread vs push - simple2
Comments
Confirm delete:
Do you really want to delete benchmark?