Benchmark: Spread vs Push SSS

Tests:

Spread
const cart = [ { name: 'The Foundation Triology', price: 19.99, discount: false, }, { name: 'Godel, Escher, Bach', price: 15.99, discount: false, }, { name: 'Red Mars', price: 5.99, discount: true, }, ]; const reward = { name: 'Guide to Science Fiction', discount: true, price: 0, }; function addGift(reward) { return [...cart, reward]; } console.log("Add gift:"); console.log(addGift(reward)); console.log("\n");
Push
const cart = [ { name: 'The Foundation Triology', price: 19.99, discount: false, }, { name: 'Godel, Escher, Bach', price: 15.99, discount: false, }, { name: 'Red Mars', price: 5.99, discount: true, }, ]; const reward = { name: 'Guide to Science Fiction', discount: true, price: 0, }; function addGift(reward) { cart.push(reward) return cart; } console.log("Add gift:"); console.log(addGift(reward)); console.log("\n");

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Spread
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 the provided JSON and explain what's being tested.

**Benchmark Definition**

The benchmark is defined as "Spread vs Push SSS" (short for "Slice and Spread Syntax"). The script preparation code and HTML preparation code are empty, indicating that no specific setup or environment needs to be created for this benchmark.

**Test Cases**

There are two test cases:

1. **Test Case 1: Spread**
This test case uses the spread operator (`...`) to create a new array by spreading the existing `cart` array and adding the `reward` object to it.
```javascript
function addGift(reward) {
  return [...cart, reward];
}
```
The purpose of this function is to add the `reward` object to the end of the `cart` array.

2. **Test Case 2: Push**
This test case uses the `push()` method to add the `reward` object to the end of the `cart` array.
```javascript
function addGift(reward) {
  cart.push(reward)
  return cart;
}
```
The purpose of this function is similar to the previous one, but it modifies the original `cart` array.

**Options Compared**

In this benchmark, two options are being compared:

1. **Spread Operator**: The spread operator (`...`) is used to create a new array by spreading the existing `cart` array and adding the `reward` object to it.
2. **Push Method**: The `push()` method is used to add the `reward` object to the end of the `cart` array.

**Pros and Cons**

Here's a brief summary of the pros and cons of each approach:

1. **Spread Operator**
	* Pros:
		+ Creates a new array, which can be beneficial for performance-critical applications.
		+ Allows for more concise code.
	* Cons:
		+ Can lead to unnecessary memory allocations and copies if used excessively.
2. **Push Method**
	* Pros:
		+ Modifies the original array, which can be beneficial for reducing memory allocations.
		+ Allows for easier iteration over the modified array.
	* Cons:
		+ Can lead to slower performance due to the modification of the original array.

**Other Considerations**

When deciding between these two approaches, consider the following factors:

1. **Performance**: If you need optimal performance and are willing to sacrifice readability, using the spread operator might be a better choice.
2. **Readability**: If readability is more important than performance, using the `push()` method or creating a new array using other methods (e.g., `concat()`) might be a better option.
3. **Memory Usage**: If memory usage is a concern, using the push method or creating a new array with minimal allocations can help reduce memory pressure.

**Library**

There are no libraries used in these benchmark test cases.

**Special JS Features/Syntax**

The only special feature used here is the spread operator (`...`), which was introduced in ECMAScript 2015 (ES6). The push method is a standard JavaScript method and does not require any special features.

Related benchmarks:

Spread vs Push SSS (version: 0)

Spread vs Push

Comparing performance of: Spread vs Push

Created: 2 years ago by: Guest

Jump to the latest result

Spread

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):