Benchmark: isEqual + sort vs. difference

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js"></script>

Script Preparation code:

window.foo1 = [1,2,3,4,5,6,7,8,9,10,11,12];
window.bar1 = [33,10,11,12,1,2,3,4,5,6,7,8,9,44];

Tests:

isEqual
_.isEqual(window.foo1.sort(), window.bar1.sort())
difference
_.difference(window.foo1, window.bar1).length === 0

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
isEqual
difference

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36

Browser/OS: Chrome 95 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
isEqual	870147.2 Ops/sec
difference	1323973.8 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided JSON and explain what is tested, compared, and other considerations.

**Benchmark Overview**

The benchmark compares two approaches: `_.isEqual()` and `_.difference()`. The purpose of these functions is to determine if two arrays are equal (`.isEqual()`) or have only unique elements (`.difference()`).

**Library: Lodash.js**

The benchmark uses the Lodash library, which provides utility functions for various tasks, including array manipulation (`_.isEqual()` and `.difference()`). Lodash simplifies common programming tasks by providing a collection of reusable functions.

**Options Compared**

In this benchmark:

* **`_.isEqual(window.foo1.sort(), window.bar1.sort())`**: This test checks if two sorted arrays are equal. The `sort()` method sorts the elements in ascending order.
* **`_.difference(window.foo1, window.bar1).length === 0`**: This test checks if the difference between two arrays has a length of 0, indicating that they have only unique elements.

**Pros and Cons**

* **`_.isEqual(window.foo1.sort(), window.bar1.sort())`**:
	+ Pros: Simple to understand, easy to implement.
	+ Cons: Sorting can be slow for large datasets, and it may not work correctly for non-numeric arrays or with specific sorting algorithms (e.g., stable sort).
* **`_.difference(window.foo1, window.bar1).length === 0`**:
	+ Pros: Fast, efficient way to check for unique elements.
	+ Cons: May have issues with edge cases (e.g., null or undefined values), and it can be less intuitive than using `_.isEqual()`.

**Special JS Feature/Syntax**

There is no special JavaScript feature or syntax mentioned in the benchmark. The code is straightforward and uses built-in functions provided by Lodash.

**Alternatives**

If you're interested in comparing these approaches with different libraries or custom implementations, here are some alternatives:

1. **Implementing your own sorting algorithm**: Instead of using `sort()`, you could implement a sorting algorithm like quicksort, mergesort, or heapsort.
2. **Using a different array manipulation library**: You could use libraries like jQuery (if you're working with DOM elements) or a custom implementation of array operations.
3. **Comparing with other comparison functions**: You might want to compare `_.isEqual()` and `.difference()` with other comparison functions, such as `===` for equality or `Array.prototype.filter()` for unique elements.

Keep in mind that these alternatives would likely require more effort and expertise in JavaScript implementation details.

Related benchmarks:

isEqual + sort vs. difference (version: 0)

Comparing performance of: isEqual vs difference

Created: 3 years ago by: Guest

Jump to the latest result

isEqual

difference

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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