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>

AخA
 
<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])];

 
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]);

 
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

Experimental features:

Memory measurements supported only in Chrome.
For precise memory measurements Chrome must be launched with --enable-precise-memory-info flag.
More information: Monitoring JavaScript Memory

Test case name	Result
Set
Lodash

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one month 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 7 months ago):

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:

A native JavaScript function that uses a Set object to remove duplicates from an array.
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:

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.
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.

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