Benchmark: Push vs Next index

Tests:

Push
var params = [ "hello", true, 7 ]; params.push('new');
Next index
var params = [ "hello", true, 7 ]; params[params.length] = 'new';

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Push
Next index

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

I'd be happy to help you understand the benchmark being tested.

The provided JSON represents a JavaScript microbenchmark that compares two approaches for adding elements to an array: using the `push` method and using the indexing syntax (`params[params.length] = 'new';`).

**What is being tested?**

The benchmark tests how fast each approach performs in terms of the number of executions per second.

**Options compared**

There are two options being compared:

1. **Push**: The traditional way to add elements to an array using the `push` method.
2. **Next index**: A more modern and efficient approach that uses indexing syntax to add elements to the end of an array (`params[params.length] = 'new';`).

**Pros and Cons**

* **Push**:
	+ Pros: Widely supported and easy to understand for most developers.
	+ Cons: Can be slower than the indexing approach, especially for large arrays, due to the overhead of pushing a new element onto the array's length property.
* **Next index**:
	+ Pros: Often faster than the `push` method because it avoids the overhead of updating the array's length property. This can result in better performance, especially for large arrays.
	+ Cons: May be less familiar to some developers, and its syntax may not be as intuitive.

**Library usage**

There is no explicit library mentioned in the benchmark definition or test cases.

**Special JavaScript feature/syntax**

None are explicitly mentioned in this particular benchmark. However, it's worth noting that the indexing approach (`params[params.length] = 'new';`) uses a common pattern in JavaScript called "array indexing" which allows direct access to array elements by their index.

**Other alternatives**

If you were to extend or modify this benchmark, other approaches you might consider include:

* Using `unshift` instead of `push`
* Adding elements to an array using the `splice` method
* Comparing the performance of different data structures, such as arrays versus linked lists

To prepare a new benchmark definition, you would need to create a JSON object with the following properties:

* `Name`: A descriptive name for your benchmark.
* `Description`: An optional description of your benchmark.
* `Script Preparation Code`: Any JavaScript code needed to set up the test environment and data structures.
* `Html Preparation Code`: Any HTML code needed to render the benchmark results.

For example:
```json
{
  "Name": "Array concatenation",
  "Description": "Compare the performance of array concatenation methods.",
  "Script Preparation Code": "...",
  "Html Preparation Code": "..."
}
```
You would then define multiple test cases within a `testCases` array, each with its own `benchmarkDefinition` and `testName`.

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36

Browser/OS: Chrome 93 on Windows

View result in a separate tab

Test name	Executions per second
Push	60408064.0 Ops/sec
Next index	51585056.0 Ops/sec

Related benchmarks:

Push vs Next index (version: 0)

Comparing performance of: Push vs Next index

Created: 3 years ago by: Guest

Jump to the latest result

Push

Next index

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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