Benchmark: Js custom Filter test

Tests:

Filter default
let value = [true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true]; let result = value.filter(v => v);
Filter Boolean
let value = [true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true]; let result = value.filter(Boolean);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Filter default
Filter Boolean

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 6 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36

Browser/OS: Chrome 68 on Windows

View result in a separate tab

Test name	Executions per second
Filter default	4578039.0 Ops/sec
Filter Boolean	739917.1 Ops/sec

Autogenerated LLM Summary (model llama3.1:latest, generated 2 months ago):

LLMs can make mistakes. Check important info.

Let's dive into the details of this benchmark.

**What is being tested?**

The benchmark tests two different approaches to filtering an array in JavaScript: using the `filter()` method with a callback function, and using the `filter()` method with the `Boolean` value as its argument.

**Test case 1: "Filter default"**

In this test case, the `filter()` method is used with a callback function that takes each element `v` of the array `value` and returns `true` if `v` is truthy (i.e., not equal to `false`, `0`, an empty string, etc.). The resulting filtered array is stored in the variable `result`.

**Test case 2: "Filter Boolean"**

In this test case, the `filter()` method is used with the `Boolean` value as its argument. This means that every element in the array `value` will be considered truthy if it's not equal to `false`, and the resulting filtered array will contain all elements that pass this truthiness check.

**What options are compared?**

The two test cases compare two different approaches to filtering an array:

1. Using a callback function (`v => v`) with the `filter()` method.
2. Passing the `Boolean` value as an argument to the `filter()` method.

**Pros and cons of each approach:**

1. **Callback function**: This approach is more explicit and easier to understand, especially for complex filtering logic. However, it requires more code and can be slower due to the overhead of calling a function for each element.
2. **Boolean value**: This approach is concise and fast, but may not be as readable or maintainable for complex filtering logic.

**Other considerations:**

* Both approaches will produce the same result (a filtered array containing all truthy elements) if used correctly.
* The `filter()` method returns a new array, so it won't modify the original array.
* This benchmark doesn't test any library-specific functionality; the JavaScript built-in `filter()` method is used in both cases.

**Library and special JS feature:**

No libraries or special JavaScript features are used in this benchmark. It relies on the standard JavaScript `filter()` method, which is available in all modern browsers and Node.js environments.

**Alternatives:**

While not tested in this specific benchmark, other alternatives for filtering an array include:

* Using a loop to iterate over the array and push truthy elements to a new array.
* Using a library like Lodash or Underscore.js, which provide various filtering functions (e.g., `_.filter()`) that can be used instead of the standard JavaScript `filter()` method.

Keep in mind that these alternatives may have their own performance characteristics, so it's essential to consider them in the context of your specific use case.

Related benchmarks:

Js custom Filter test (version: 0)

Comparing performance of: Filter default vs Filter Boolean

Created: 6 years ago by: Guest

Jump to the latest result

Filter default

Filter Boolean

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.1:latest, generated 2 months ago):