Benchmark: spread operator vs push Brian2

Tests:

spread operator
var params = [ 1, 2 ]; var other = [ ...params, 3 ];
Push
var params = [ 1, 2 ]; var other = params.push(3);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
spread operator
Push

Fastest: N/A

Slowest: N/A

Latest run results:

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

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

**Benchmark Overview**

The benchmark compares two approaches for adding an element to an array:

1. The new ES6 spread operator (`...`)
2. The traditional `concat()` method and `push` syntax.

**Test Cases**

There are two individual test cases:

1. **Spread Operator**: This test case creates an array `params` with initial elements `[ 1, 2 ]`, and then uses the spread operator to create a new array `other` by concatenating `params` with the element `3`.
```javascript
var params = [ 1, 2 ];
var other = [...params, 3];
```
This test case measures the performance of using the spread operator.

2. **Push**: This test case creates an array `params` with initial elements `[ 1, 2 ]`, and then uses the `push()` method to add the element `3` to the end of the array.
```javascript
var params = [ 1, 2 ];
var other = params.push(3);
```
This test case measures the performance of using the traditional `concat()` method and `push` syntax.

**Options Compared**

The benchmark compares two options:

* **Spread Operator**: Using the new ES6 spread operator to create a new array by concatenating elements.
* **Push**: Using the traditional `concat()` method and `push` syntax to add an element to the end of an array.

**Pros and Cons**

Here are some pros and cons of each approach:

**Spread Operator:**

Pros:

* More concise and expressive code
* Creates a new array without modifying the original array

Cons:

* May incur additional overhead due to creating a new array
* Not supported in older browsers or environments that don't support ES6

**Push:**

Pros:

* Fast and efficient, as it modifies the existing array
* Widely supported across browsers and environments

Cons:

* More verbose code compared to the spread operator
* Creates a new array on the heap, which can lead to garbage collection overhead

**Library Used**

The benchmark doesn't explicitly mention any libraries being used. However, it's worth noting that modern JavaScript engines (like V8) provide built-in support for the spread operator, so no additional libraries are required.

**Special JS Features or Syntax**

The benchmark uses a few features that are specific to modern JavaScript:

* The new ES6 spread operator (`...`), which was introduced in ECMAScript 2015.
* Arrow functions ( implicit `=>`), which were also introduced in ECMAScript 2015.

These features are widely supported across modern browsers and environments, but may not be supported in older browsers or environments that don't support ES6.

**Other Alternatives**

If you're interested in exploring alternative approaches for adding elements to an array, here are a few options:

* **Array.prototype.splice()**: This method modifies the existing array by replacing a range of elements with new elements.
* **Array.prototype.slice()**: This method returns a shallow copy of the entire array or a slice of it.
* **Native Array.prototype.push()` with `new Array()`: This approach creates a new array and then pushes the element onto it.

Keep in mind that these alternatives may have different performance characteristics compared to the spread operator and traditional `concat()` method and `push` syntax.

Related benchmarks:

spread operator vs push Brian2 (version: 0)

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

Comparing performance of: spread operator vs Push

Created: 5 years ago by: Guest

Jump to the latest result

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):