Benchmark: functional vs fill

Tests:

functional
Array.from(Array(3), () => 0)
fill method
new Array(3).fill(0)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
functional
fill method

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and its components.

**Benchmark Definition**

The benchmark definition is a JSON object that represents a specific task to be measured. In this case, there are two test cases:

1. "functional vs fill": This test compares the performance of using the `Array.from()` method versus the `fill()` method in JavaScript.
2. The script preparation code is empty, which means that no additional setup or initialization code needs to be executed before running the benchmark.

**Options being compared**

The two options being compared are:

1. **`Array.from()` method**: This method creates a new array from an iterable or an array-like object. In this case, it's used with `Array(3)` and a callback function that returns 0.
2. **`fill()` method**: This method fills all elements of an existing array with a specified value.

**Pros and Cons**

Here are some pros and cons of each approach:

1. **`Array.from()` method**:
	* Pros:
		+ More flexible, as it can be used with various iterables or array-like objects.
		+ Allows for more complex initialization logic (e.g., using a callback function).
	* Cons:
		+ Can be slower due to the overhead of creating a new array and iterating over the iterable.
2. **`fill()` method**:
	* Pros:
		+ Faster, as it only needs to fill the existing array with a value.
	* Cons:
		+ Less flexible, as it can only be used with existing arrays.

**Library usage**

There is no explicit library usage in this benchmark, so we won't discuss any additional libraries or dependencies.

**Special JavaScript features or syntax**

There are no special JavaScript features or syntax mentioned in the provided code. The use of `Array.from()` and `fill()` methods is standard JavaScript syntax.

**Other alternatives**

If you wanted to compare other approaches, here are some possible alternatives:

1. **`slice()` method**: Instead of using `Array.from()`, you could use the `slice()` method to create a new array.
2. **`Array constructor`**: You could also use the traditional array constructor (e.g., `new Array(3)` ) instead of `Array.from()`.
3. **Other initialization methods**: Depending on your specific requirements, you might want to explore other methods for initializing arrays, such as using a loop or a recursive function.

In conclusion, this benchmark is designed to compare the performance of two common JavaScript array initialization methods: `Array.from()` and `fill()`. The test uses a simple script preparation code and no additional libraries or dependencies.

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/88.0.4324.150 Safari/537.36

Browser/OS: Chrome 88 on Windows

View result in a separate tab

Test name	Executions per second
functional	1599402.0 Ops/sec
fill method	3699048.2 Ops/sec

Related benchmarks:

functional vs fill (version: 0)

Comparing performance of: functional vs fill method

Created: 3 years ago by: Guest

Jump to the latest result

functional

fill method

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):