Benchmark: Array.from vs Spread 10000 samples

Tests:

Array.from
var fooSet = new Set(); for(var i=0;i<10000;i++) { fooSet.add(i); } var other = Array.from(fooSet);
Spread
var fooSet = new Set(); for(var i=0;i<10000;i++) { fooSet.add(i); } var other = [...fooSet];

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.from
Spread

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 dive into the world of JavaScript microbenchmarks!

**Benchmark Definition**

The benchmark is defined in two parts: a JSON object that represents the overall benchmark setup, and individual test cases.

* The **Benchmark Definition** JSON object contains information about the benchmark:
	+ `Name`: a human-readable name for the benchmark (in this case, "Array.from vs Spread 10000 samples").
	+ `Description`: an optional description of the benchmark.
	+ `Script Preparation Code` and `Html Preparation Code`: these fields are currently empty, which means that no additional code needs to be executed before running the benchmark.
* The **Individual Test Cases** are defined in an array. Each test case has:
	+ A unique **Benchmark Definition**, which is a JavaScript script that defines a specific scenario for testing.
	+ A corresponding **Test Name**, which identifies the test case.

In this case, we have two test cases:

1. "Array.from"
2. "Spread"

Both test cases create a Set object with 10,000 elements and then convert it to an Array using different methods: `Array.from` and the spread operator (`...`).

**Options Compared**

The benchmark compares the performance of two ways to convert a Set to an Array:

1. **Array.from**: This method was introduced in ECMAScript 2015 (ES6) and is now widely supported by most modern browsers.
2. **Spread Operator (`...`)**: This operator was also introduced in ES6, but its usage has gained popularity since then.

**Pros and Cons**

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

* **Array.from**:
	+ Pros:
		- Well-defined API with clear documentation.
		- Supports multiple types of Sets (e.g., `Set`, `Map`, etc.).
		- Can be used with various iteration strategies (e.g., `values()`, `keys()`, etc.).
	+ Cons:
		- May require additional setup for certain use cases (e.g., handling Set iterators).
* **Spread Operator (`...`)**:
	+ Pros:
		- Simple and concise syntax.
		- Works well with modern browsers that support ES6 features.
	+ Cons:
		- Less intuitive than `Array.from` in some cases.
		- May not be supported by older browsers or environments.

**Library**

In neither test case is a library explicitly used. However, if you were to implement this benchmark in a real-world scenario, you might consider using libraries like:

* Lodash (for utility functions)
* Ramda (for functional programming utilities)

These libraries can help simplify certain operations and improve performance.

**Special JS Feature or Syntax**

There are no special JavaScript features or syntax mentioned in the provided code snippets. However, if you were to add more complexity to your benchmark, you might consider exploring:

* Promises and async/await syntax for handling asynchronous computations.
* Web APIs like `requestAnimationFrame()` or `setInterval()` for optimizing loop performance.

For now, though, these benchmarks focus on comparing the performance of two basic methods: `Array.from` and the spread operator.

**Other Alternatives**

If you're interested in exploring alternative benchmarking frameworks or tools, here are a few options:

* **BenchmarkJS**: A popular JavaScript benchmarking framework.
* **Benchpress**: Another widely used JavaScript benchmarking library.
* **Web Performance Optimization Tools**: Modern web performance optimization tools like Webpack, Rollup, and modern browsers' built-in performance analyzers can also be used for benchmarking.

I hope this explanation helps you understand the basics of MeasureThat.net's JavaScript microbenchmarks!

Related benchmarks:

Array.from vs Spread 10000 samples (version: 0)

Comparing performance of: Array.from vs Spread

Created: 4 years ago by: Guest

Jump to the latest result

Array.from

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):