Benchmark: Creating array.....

Tests:

1
[...Array(1e+6).keys()]
2
Array.from({ length: 1e+6 }, (_, i) => i)
3
Array(1e+6).fill(0).map((_, i) => i)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
1
2
3

Fastest: N/A

Slowest: N/A

Latest run results:

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

LLMs can make mistakes. Check important info.

Let's break down the provided JSON data to understand what is being tested in this JavaScript microbenchmark.

**Benchmark Definition**
The benchmark definition is a simple string that represents the code snippet to be executed for each test case. There are three different ways to create an array of 1 million elements:

1. `Array(1e+6).keys()`
2. `Array.from({ length: 1e+6 }, (_, i) => i)`
3. `Array(1e+6).fill(0).map((_, i) => i)`

Each test case represents a different approach to create an array of a specific size.

**Options Compared**

Here's a brief overview of each option:

* **Option 1: `Array(1e+6).keys()`**
	+ Pros:
		- Simple and concise syntax.
		- Fast execution ( likely due to the optimized `keys()` method).
	+ Cons:
		- May not be as efficient as other methods due to the need for additional processing.
* **Option 2: `Array.from({ length: 1e+6 }, (_, i) => i)`**
	+ Pros:
		- More readable and maintainable code.
		- Can be more efficient than other methods (depending on the specific use case).
	+ Cons:
		- Requires the use of `Array.from()` method, which may add overhead.
* **Option 3: `Array(1e+6).fill(0).map((_, i) => i)`**
	+ Pros:
		- Similar to Option 2, but uses a more traditional array creation approach.
	+ Cons:
		- May be less efficient than other methods due to the need for additional processing.

**Libraries Used**

None of the provided benchmark definitions use any external libraries.

**Special JavaScript Features or Syntax**

There are no special features or syntax used in these benchmark definitions. They only utilize standard JavaScript constructs and built-in functions.

**Other Alternatives**

If you want to test other approaches to creating an array, here are some additional options:

* Using `Array.prototype.fill()` and `Array.prototype.map()`
* Using a custom implementation of the `Array` constructor
* Using WebAssembly or other low-level memory allocation APIs

Keep in mind that these alternatives may introduce significant overhead or complexity, making them less suitable for microbenchmarking.

**Benchmark Preparation Code**

Since there is no script preparation code provided, we can assume that the benchmark script is straightforward and only involves executing one of the three array creation options.

Related benchmarks:

Creating array..... (version: 0)

Creating array.....

Comparing performance of: 1 vs 2 vs 3

Created: 4 years ago by: Guest

Jump to the latest result

1

2

3

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):