Benchmark: Lodash difference vs Set & Filter 2

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var arr1 = [];
for(let i = 0; i < 10; i++) {
  arr1.push(Math.random().toString(32));
}

var arr2 = [];
for(let i = 0; i < 10; i++) {
  arr2.push(Math.random().toString(32));
}

Tests:

Lodash
const notInArr1 = _.difference(arr2, arr1) const notInArr2 = _.difference(arr1, arr2)
Set & Filter
const arr1Set = new Set(); const arr2Set = new Set(); arr1.forEach(value => arr1Set.add(value)); arr2.forEach(value => arr2Set.add(value)); const notInArr1 = arr2.filter(value => !arr1Set.has(value)); const notInArr2 = arr1.filter(value => !arr2Set.has(value));

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash
Set & Filter

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 24 days ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark definition and test cases.

**Benchmark Definition**

The website `MeasureThat.net` allows users to create and run JavaScript microbenchmarks. The provided JSON represents the benchmark definition for two test cases: "Lodash" and "Set & Filter 2".

In this case, we have a benchmark that tests the performance of two different approaches:

1. **Lodash**: This approach uses the `lodash` library to perform set operations. Specifically, it uses the `_.difference()` function to find elements in one array that are not present in another.
2. **Set & Filter**: This approach uses native JavaScript features (sets and filtering) to achieve the same result without relying on a library.

**Options Compared**

The benchmark compares two options:

1. Using the `lodash` library for set operations
2. Using native JavaScript sets and filtering

**Pros and Cons of Each Approach:**

* **Lodash**:
	+ Pros:
		- Easy to use and well-documented
		- Provides a simple and efficient way to perform set operations
	+ Cons:
		- Adds additional overhead due to the library's functionality
		- May not be optimized for performance in all scenarios
* **Set & Filter**:
	+ Pros:
		- No additional overhead, as it relies on native JavaScript features
		- Can be more efficient and optimal for performance in certain scenarios
	+ Cons:
		- Requires a basic understanding of set operations and filtering
		- May require more code to achieve the same result

**Library: Lodash**

Lodash is a popular JavaScript library that provides a comprehensive set of utility functions, including support for sets. The `lodash` library is often used for its convenience, readability, and ease of use.

In this benchmark, the `lodash` library is used to perform set operations using the `_.difference()` function.

**Special JS Feature: None**

There are no special JavaScript features or syntaxes being tested in this benchmark.

**Other Alternatives**

If you're interested in exploring alternative approaches, here are a few:

1. **Underscore.js**: Another popular JavaScript library that provides utility functions for working with arrays and objects.
2. **Array.prototype.filter()** and `Set.prototype.has()`: Using these native JavaScript methods to achieve set operations without relying on libraries.
3. **Other libraries or frameworks**: Depending on your specific use case, you might consider using other libraries or frameworks that provide efficient set operations, such as `ramda` or `fast-stripe`.

Keep in mind that the choice of approach ultimately depends on your project's requirements, performance constraints, and personal preferences.

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Linux; Android 12; SM-G975F Build/SP1A.210812.016) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.5304.91 Mobile Safari/537.36

Browser/OS: Chrome Mobile 107 on Android

View result in a separate tab

Test name	Executions per second
Lodash	197056.2 Ops/sec
Set & Filter	96857.3 Ops/sec

Related benchmarks:

Lodash difference vs Set & Filter 2 (version: 0)

Comparing performance of: Lodash vs Set & Filter

Created: 2 years ago by: Guest

Jump to the latest result

Lodash

Set & Filter

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 24 days ago):