Benchmark: spread vs concat2

Tests:

spread
const arr1 = [1,2,3,4,5,6,7,34,4,6,6,7,457,34,57,3457,345,73,457,3457,345,734,573,457,3,25,35,23,52,35,235,23,52,35,235,2,35,235,235,23,523,234,62,346,234,62,47,4568,678,96,80,687,067,453,63,456,45,634,563,,89,67,67,56,53,43,36,346,634,63,46,346,3,74,6784678,46,84,56,8,4,5,2,3,4,6,2346,23,46,2346,23,46,6567,8567,8,5678,56,785,6,7,8,5,6,7,85,67] const arr2 = [1,2,3,4,5,6,7,34,4,6,6,7,457,34,57,3457,345,73,457,3457,345,734,573,457,3,25,35,23,52,35,235,23,52,35,235,2,35,235,235,23,523,234,62,346,234,62,47,4568,678,96,80,687,067,453,63,456,45,634,563,,89,67,67,56,53,43,36,346,634,63,46,346,3,74,6784678,46,84,56,8,4,5,2,3,4,6,2346,23,46,2346,23,46,6567,8567,8,5678,56,785,6,7,8,5,6,7,85,67]; const arr3 = [1,2,3,4,5,6,7,34,4,6,6,7,457,34,57,3457,345,73,457,3457,345,734,573,457,3,25,35,23,52,35,235,23,52,35,235,2,35,235,235,23,523]; const finalArr = [ ...arr1, ...arr2, ...arr3 ]
concat
const arr1 = [1,2,3,4,5,6,7,34,4,6,6,7,457,34,57,3457,345,73,457,3457,345,734,573,457,3,25,35,23,52,35,235,23,52,35,235,2,35,235,235,23,523,234,62,346,234,62,47,4568,678,96,80,687,067,453,63,456,45,634,563,,89,67,67,56,53,43,36,346,634,63,46,346,3,74,6784678,46,84,56,8,4,5,2,3,4,6,2346,23,46,2346,23,46,6567,8567,8,5678,56,785,6,7,8,5,6,7,85,67] const arr2 = [1,2,3,4,5,6,7,34,4,6,6,7,457,34,57,3457,345,73,457,3457,345,734,573,457,3,25,35,23,52,35,235,23,52,35,235,2,35,235,235,23,523,234,62,346,234,62,47,4568,678,96,80,687,067,453,63,456,45,634,563,,89,67,67,56,53,43,36,346,634,63,46,346,3,74,6784678,46,84,56,8,4,5,2,3,4,6,2346,23,46,2346,23,46,6567,8567,8,5678,56,785,6,7,8,5,6,7,85,67]; const arr3 = [1,2,3,4,5,6,7,34,4,6,6,7,457,34,57,3457,345,73,457,3457,345,734,573,457,3,25,35,23,52,35,235,23,52,35,235,2,35,235,235,23,523]; const finalArr = arr1.concat(arr2.concat(arr3))

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
spread
concat

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.

Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**Benchmark Definition**

The provided benchmark definition is quite simple, consisting of two test cases: `spread` and `concat`. The test cases are designed to compare the performance of creating an array by spreading or concatenating existing arrays.

**Options Compared**

In the `spread` test case:

* The input arrays (`arr1`, `arr2`, `arr3`) are spread using the syntax `...arrX` to create a new array.
* The final concatenated array is created using the `concat()` method.

In the `concat` test case:

* The input arrays (`arr1`, `arr2`, `arr3`) are concatenated using the `concat()` method in a nested manner (i.e., `arr2.concat(arr3)`).
* The final concatenated array is also created using the `concat()` method.

**Pros and Cons**

**Spread Method:**

Pros:

* More concise and readable code
* Can be faster for large arrays, as it avoids creating temporary intermediate arrays

Cons:

* May not work well with older browsers or versions of JavaScript that don't support this syntax

**Concatenation Method:**

Pros:

* Works consistently across all browsers and versions of JavaScript
* Easy to understand and implement

Cons:

* Can be slower due to the creation of intermediate arrays

**Other Considerations**

Both methods have their trade-offs in terms of performance, readability, and maintainability. The spread method can be faster but may not work well with older browsers or versions of JavaScript. On the other hand, the concatenation method is more widely supported but may be slower.

**Libraries Used**

None are explicitly mentioned in the provided benchmark definition. However, it's worth noting that some libraries like Lodash provide utility functions for working with arrays, including `spread` and `concat`.

**Special JS Features or Syntax**

The spread syntax (`...`) is a feature introduced in ECMAScript 2015 (ES6). It allows for more concise array creation by spreading the elements of an existing array. This syntax is widely supported across modern browsers and versions of JavaScript.

In summary, the benchmark compares the performance of creating an array using either the spread or concatenation method. The results indicate that the spread method can be faster but may not work well with older browsers or versions of JavaScript.

Related benchmarks:

spread vs concat2 (version: 0)

Comparing performance of: spread vs concat

Created: 6 years ago by: Guest

Jump to the latest result

spread

concat

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):