Benchmark: filter vs _without

HTML Preparation code:

<script src="lodash.js"></script>

Script Preparation code:

var array = [...Array(100000).keys()];
var DEPRECATED = [761];
var CLEAR_DEPRECATED = [];

Tests:

filter
array.filter(n => DEPRECATED.includes(n));
_without
_.without(array, ...DEPRECATED);
filter clear
array.filter(n => CLEAR_DEPRECATED.includes(n));
_without clear
_.without(array, ...CLEAR_DEPRECATED);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
filter
_without
filter clear
_without clear

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

**Overview**

The provided JSON represents a JavaScript microbenchmark test case on the MeasureThat.net website. The benchmark compares two approaches to filter an array: using the `Array.prototype.filter()` method and using the `_without()` function from the Lodash library.

**Benchmarked Functions**

There are four individual test cases:

1. **filter**: Uses the `Array.prototype.filter()` method with a callback function that checks if each element is included in the `DEPRECATED` array.
2. **_without**: Uses the `_without()` function from Lodash, which is similar to `Array.prototype.filter()`, but uses an array of values to filter out instead of checking for presence.
3. **filter clear**: Similar to the first test case, but uses the `CLEAR_DEPRECATED` array as the filter criteria.
4. **_without clear**: Similar to the second test case, but uses the `CLEAR_DEPRECATED` array as the value to remove.

**Options Compared**

The two main approaches being compared are:

1. **Array.prototype.filter()**: A built-in JavaScript method that creates a new array with all elements from the original array that pass the provided callback function.
2. **_without()` (Lodash library)**: A utility function that removes the specified values from an array, returning a new array with the removed values.

**Pros and Cons**

* **Array.prototype.filter()**:
	+ Pros: Built-in JavaScript method, easy to use, and well-documented.
	+ Cons: Can be slower than Lodash's `_without()` for large arrays, as it requires iterating over all elements.
* **_without()` (Lodash library)**:
	+ Pros: Faster performance for large arrays, especially when removing multiple values, due to its optimized implementation.
	+ Cons: Requires an external library (Lodash), which may not be desirable for some projects.

**Library and Purpose**

The Lodash library is a popular utility library that provides a wide range of functional programming helpers, including the `_without()` function. Its purpose is to provide efficient and concise ways to perform common tasks, such as array filtering, mapping, and reducing.

**Special JS Feature or Syntax**

There are no special JavaScript features or syntax used in this benchmark beyond what's typically found in modern JavaScript implementations. No ES6+ features like `const`, `let`, or arrow functions are used, making the code relatively accessible to a wide range of software engineers.

**Other Alternatives**

If you prefer not to use Lodash, there are alternative approaches to filtering arrays:

1. **Using `filter()` with a regular expression**: You can use a regular expression as the callback function in `Array.prototype.filter()`, which can be faster than using an array of values.
2. **Using `map()` and `some()`**: Instead of filtering directly, you can use `map()` to create a new array and then check for presence using `some()`.
3. **Implementing your own filter function**: You can write a custom implementation of the filtering logic, which may be more efficient than relying on built-in or external libraries.

Keep in mind that the best approach depends on your specific use case, performance requirements, and personal preferences.

Related benchmarks:

filter vs _without (version: 0)

Comparing performance of: filter vs _without vs filter clear vs _without clear

Created: 3 years ago by: Guest

Jump to the latest result

filter

_without

filter clear

_without clear

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):