Benchmark: Prueba array - MeasureThat.net

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>

Previous results

Test case name	Result
Push y for
usifht

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/82.0.4085.8 Safari/537.36

Browser/OS: Chrome 82 on Mac OS X 10.15.3

View result in a separate tab

Test name	Executions per second
Push y for	22787526.0 Ops/sec
usifht	7067193.5 Ops/sec

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

LLMs can make mistakes. Check important info.

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:

Prueba array (version: 0)

ushinf VS foreach+push

Comparing performance of: Push y for vs usifht

Created: 4 years ago by: Guest

Jump to the latest result

Push y for

usifht

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):