Benchmark: Lodash Uniq vs Javascript Set

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 = [];

for (var i=0; i<=100000000; i++) {
  firstEqual.push(i);
  secondEqual.push(i);
}

var arrayToDedup = [...firstEqual, ...secondEqual];

Tests:

Lodash Uniq
_.uniq(arrayToDedup);
Javascript Set
[...new Set(arrayToDedup)]

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash Uniq
Javascript Set

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 8 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36

Browser/OS: Chrome 142 on Mac OS X 10.15.7

View result in a separate tab

Lodash Uniq

265.2M/s

Javascript Set

65.4M/s

View exact numbers

Test name	Executions per second
✓ Lodash Uniq	265,211,856 Ops/sec
Javascript Set	65,364,928 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark and analyze what's being tested.

**Benchmark Purpose:**
The primary goal of this benchmark is to compare the performance of two approaches for removing duplicates from an array:

1. Using the `uniq` function from Lodash, a popular JavaScript utility library.
2. Using the native `Set` data structure in JavaScript.

**Options Compared:**

* **Lodash Uniq:** The `uniq` function takes an array as input and returns a new array with unique elements, preserving the original order of equal elements.
* **Javascript Set:** Creating a new `Set` instance from the array, which automatically removes duplicates by storing each element only once. The resulting set can then be converted back to an array using the spread operator (`[...new Set(arrayToDedup)]`).

**Pros and Cons:**

* **Lodash Uniq:**
	+ Pros:
		- Easy to use and familiar for developers.
		- Preserves the original order of equal elements, which can be important in certain scenarios.
	+ Cons:
		- Adds an additional dependency on Lodash, which may increase bundle size.
		- May have overhead due to function call and object creation.
* **Javascript Set:**
	+ Pros:
		- Lightweight and efficient, as it uses native JavaScript data structures.
		- Fast and scalable for large datasets.
	+ Cons:
		- Requires understanding of the `Set` data structure and its behavior.
		- May not preserve the original order of equal elements.

**Library:**
The benchmark uses Lodash version 4.17.5, which is a popular utility library providing a wide range of functions for tasks like array manipulation, string manipulation, and more.

**JavaScript Feature/ Syntax:**
There's no special JavaScript feature or syntax being tested in this benchmark. The focus is on comparing the performance of two algorithms implemented by libraries (Lodash) versus native JavaScript built-in methods.

**Other Alternatives:**

* Other approaches to remove duplicates from an array could include:
	+ Using a custom implementation with a hash table or object to keep track of unique elements.
	+ Utilizing other JavaScript libraries like Array.prototype.reduce() or Array.prototype.filter().
	+ Leveraging external libraries like Ramda, which provides a wide range of functional programming utilities.

Keep in mind that the choice of algorithm and library depends on the specific requirements and constraints of your project.

Lodash Uniq vs Javascript Set (version: 2)

Comparing performance of: `Lodash Uniq vs Javascript Set`

Created: 8 years ago by: Registered User

Go to the latest result

Lodash Uniq

Javascript Set

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Lodash Uniq vs Javascript Set (version: 2)

Comparing performance of: Lodash Uniq vs Javascript Set

Created: 8 years ago by: Registered User

Go to the latest result

Lodash Uniq

Javascript Set

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

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Comparing performance of: `Lodash Uniq vs Javascript Set`