Benchmark: Lodash uniq vs Set to unique array

HTML Preparation code:

<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js'></script>

Tests:

Set
return [...new Set([1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7])];
Lodash
return _.uniq([1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7]);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Set
Lodash

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 25 days ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:136.0) Gecko/20100101 Firefox/136.0

Browser/OS: Firefox 136 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
Set	3645384.2 Ops/sec
Lodash	11043311.0 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):

LLMs can make mistakes. Check important info.

I'd be happy to help you understand the benchmark test.

**Benchmark Test Overview**

The test compares two approaches to remove duplicates from an array: using JavaScript's native `Set` object and using Lodash, a popular utility library for JavaScript.

**What is being tested?**

In this test, we are measuring the performance of two different functions:

1. A native JavaScript function that uses a `Set` object to remove duplicates from an array.
2. A function from Lodash (version 4.17.10) that uses its own implementation for removing duplicates from an array.

**Options being compared**

The test compares the performance of these two approaches on large arrays with duplicate elements. The options being compared are:

* Native JavaScript `Set` object approach
* Lodash's `uniq` function

**Pros and Cons of each approach:**

1. **Native JavaScript `Set` object approach:**
	* Pros:
		+ Lightweight, as it only requires the `Set` object and basic arithmetic operations.
		+ Fast, since `Set` objects are implemented in native code and can take advantage of CPU optimizations.
	* Cons:
		+ Requires understanding of how `Set` objects work and how to use them correctly.
2. **Lodash's `uniq` function:**
	* Pros:
		+ Provides a convenient, high-level interface for removing duplicates from an array.
		+ Easy to use, as it doesn't require any special knowledge about sets or arrays.
	* Cons:
		+ Heavier, since Lodash is a larger library that includes many other utility functions.
		+ May be slower than the native JavaScript approach due to the overhead of function calls and lookups.

**Special considerations**

In this test, we don't see any special JavaScript features or syntax being used. The `Set` object is a standard feature in modern JavaScript, and Lodash's `uniq` function is designed to work with plain arrays.

**Other alternatives**

If you wanted to use other approaches for removing duplicates from an array, some examples might include:

* Using a regular expression with the `match()` method
* Using the `filter()` method with a callback function that checks for duplicates
* Using a custom implementation using a hash table or other data structure

However, these alternatives may not be as efficient or convenient as the native JavaScript `Set` object approach or Lodash's `uniq` function.

I hope this explanation helps! Let me know if you have any further questions.

Related benchmarks:

Lodash uniq vs Set to unique array (version: 0)

Comparing performance of: Set vs Lodash

Created: 3 years ago by: Guest

Jump to the latest result

Set

Lodash

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):