Benchmark: lodash uniq vs pure test

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.5/lodash.min.js"></script>

Script Preparation code:

var firstEqual = [];
var secondEqual = [];
var third = {};

for (var i=0; i<=1000000; i++) {
  firstEqual.push(i);
  secondEqual.push(i);
  third[i] = true;
}

var arrayToDedup = [...firstEqual, ...secondEqual];

Tests:

lodash
_.uniq(arrayToDedup).length;
pure
Object.keys(third).length

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash
pure

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

Let's break down what's being tested in this benchmark.

**Benchmark Overview**

The benchmark compares the performance of two approaches to remove duplicates from an array:

1. `lodash uniq` (a function from the Lodash library)
2. A simple, pure implementation using `Object.keys()` and arrays.

**Options Compared**

In this benchmark, we have two options being compared:

1. **Lodash uniq**: This is a built-in function in the Lodash library that removes duplicates from an array.
2. **Pure Implementation**: This is a custom implementation using `Object.keys()` and arrays to achieve the same result without any external libraries.

**Pros and Cons of Each Approach**

**Lodash uniq:**

Pros:

* Easy to use: You simply pass the array to the `uniq` function, and it returns the unique elements.
* Well-tested: Lodash is a widely used and well-maintained library with a large community of users and contributors.

Cons:

* External dependency: The benchmark uses an external library (Lodash), which may not be desirable for projects that want to minimize dependencies.
* Potential performance overhead due to the size of the library.

**Pure Implementation:**

Pros:

* No external dependencies: This implementation only relies on standard JavaScript features, making it more suitable for projects with strict dependencies constraints.
* Customizable: You can optimize and fine-tune this implementation to suit your specific use case.

Cons:

* More complex: The pure implementation requires a deeper understanding of how to remove duplicates from an array using `Object.keys()` and arrays.
* Potential performance overhead due to the custom implementation.

**Library Used**

In this benchmark, Lodash is used as a library to provide the `uniq` function. Lodash is a popular utility library for JavaScript that provides a wide range of functions for tasks such as string manipulation, array manipulation, and more.

The pure implementation uses standard JavaScript features, such as `Object.keys()` and arrays, which are built-in to the language.

**Special JS Feature/Syntax**

There is no special JavaScript feature or syntax being used in this benchmark. The implementation relies only on standard JavaScript features.

**Alternative Approaches**

Other approaches to remove duplicates from an array include:

1. Using a `Set` object: This approach creates a set of unique elements and then converts it back to an array.
2. Using the `filter()` method: This approach filters out duplicate elements by comparing each element to the previous ones in the array.
3. Using a custom sorting approach: This approach sorts the array first and then removes duplicates based on the sorted order.

These alternative approaches may have different performance characteristics and trade-offs compared to the Lodash uniq and pure implementation used in this benchmark.

Related benchmarks:

lodash uniq vs pure test (version: 0)

Comparing performance of: lodash vs pure

Created: 5 years ago by: Guest

Jump to the latest result

lodash

pure

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):