Benchmark: concat vs spread operator vs push..

Tests:

Array.prototype.concat
var params = [ "hello", true, 7 ]; var other = [ 1, 2 ].concat(params);
spread operator
var params = [ "hello", true, 7 ] var other = [ 1, 2, ...params ]
Push
var params = [ "hello", true, 7 ]; params.push(1); params.push(2);

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Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.prototype.concat
spread operator
Push

Fastest: N/A

Slowest: N/A

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

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Let's break down the provided benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark compares the performance of three approaches to concatenate arrays in JavaScript:

1. `concat()`: The traditional method for concatenating arrays using the `Array.prototype.concat()` method.
2. Spread operator (`...`): The new ES6 spread operator that allows for spreading an array's elements into another array.
3. `push()`: The `Array.prototype.push()` method, which adds one or more elements to the end of an array.

**Options Compared**

The benchmark compares these three approaches in terms of their execution time and number of executions per second (ExecutionsPerSecond). This allows users to see which approach is faster for this specific use case.

**Pros and Cons of Each Approach**

1. `concat()`:
	* Pros: Widely supported, well-documented, and easy to understand.
	* Cons: May be slower than the spread operator or push method due to its overhead.
2. Spread Operator (`...`):
	* Pros: Modern and efficient way to concatenate arrays, taking advantage of JavaScript's array methods.
	* Cons: May not work in older browsers that don't support ES6+ features.
3. `push()`:
	* Pros: Lightweight and efficient for small arrays or strings.
	* Cons: May be slower than the spread operator for larger arrays due to the overhead of multiple push operations.

**Other Considerations**

When choosing an approach, consider the following factors:

* Compatibility: If you need to support older browsers, the `concat()` method might be a safer choice. For modern browsers, the spread operator or push method is likely a better option.
* Performance: If you're working with large arrays or strings, the spread operator or push method might provide better performance due to their efficiency.
* Readability and maintainability: The spread operator can make code more concise and readable, while `push()` might be less intuitive for some developers.

**Library Usage**

In this benchmark, none of the test cases use a specific JavaScript library. However, if you're using a framework like React or Angular, you might need to consider libraries that provide optimized array concatenation methods.

**Special JS Features/Syntax**

There are no special JavaScript features or syntax being used in these test cases. The focus is on comparing the performance of three fundamental array concatenation methods.

I hope this explanation helps software engineers understand what's being tested in this benchmark!

Related benchmarks:

concat vs spread operator vs push.. (version: 0)

Compare the new ES6 spread operator with the traditional concat() method and push

Comparing performance of: Array.prototype.concat vs spread operator vs Push

Created: 7 years ago by: Guest

Jump to the latest result

Array.prototype.concat

spread operator

Push

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):