Benchmark: Push vs Spread 2

Tests:

Push
var arr = []; for(let i = 0; i <= 50; i++){ arr.push(i); }
Spread
var arr = []; for(let i = 0; i <= 50; i++){ arr = [...arr, i]; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Push
Spread

Fastest: N/A

Slowest: N/A

Latest run results:

No previous 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 JSON.

**Benchmark Definition**

The benchmark is comparing two approaches for adding elements to an array:

1. `Push`: Using the `push()` method to add one element at a time to the end of the array.
2. `Spread`: Using the spread operator (`...`) to add multiple elements to the beginning of the array.

**Options being compared**

The benchmark is comparing these two approaches in terms of performance. The goal is to determine which approach is faster and more efficient for adding elements to an array.

**Pros and Cons**

1. **Push**: Pros:
	* Simple and straightforward.
	* Well-supported by most browsers.
	Cons:
	* Requires a separate function call for each element addition, leading to increased overhead.
2. **Spread**: Pros:
	* More concise and expressive syntax.
	* Can be faster due to optimized array creation.

However, `Spread` also has some limitations:

* Not all browsers support the spread operator in this context.
* Can lead to slower performance if used excessively, as it involves creating a new array.

**Library usage**

None of the provided benchmark code uses any external libraries. The script preparation code and HTML preparation code are both empty, indicating that no specific setup or rendering is required for these tests.

**Special JS features/syntax**

The benchmark code uses some older syntax features:

* `var` is an old-style variable declaration, which was widely used in the early days of JavaScript.
* `let` and `const` are newer variable declarations introduced in ECMAScript 2015 (ES6).
* The spread operator (`...`) is a feature that became available in ES6.

**Other alternatives**

If you wanted to write similar benchmarks for other array operations, some possible approaches include:

* Comparing the performance of using `Array.prototype.push()` versus `Array.prototype.unshift()`.
* Comparing the performance of using `Array.prototype.splice()` versus adding elements directly.
* Creating a benchmark that tests different data structures, such as arrays versus objects or sets.

Keep in mind that the best approach for testing array operations will depend on your specific use case and requirements.

Related benchmarks:

Push vs Spread 2 (version: 0)

Comparing performance of: Push vs Spread

Created: 5 years ago by: Guest

Jump to the latest result

Push

Spread

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):