Benchmark: Array compare: Lodash isEqual vs JS Equality

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>

Script Preparation code:

// 1 level deep
window.arr1 = [1, 2];
window.arr2 = [1, 3];
window.arr3 = [2, 2];

function compare(a, b) {
  return a[0] === b[0] && a[1] === b[1]
}

Tests:

isEqual1
_.isEqual(window.arr1, window.arr2)
isEqual2
_.isEqual(window.arr1, window.arr3)
compare1
compare(window.arr1, window.arr2)
compare2
compare(window.arr1, window.arr3)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
isEqual1
isEqual2
compare1
compare2

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36

Browser/OS: Chrome 86 on Mac OS X 10.15.5

View result in a separate tab

Test name	Executions per second
isEqual1	1308083.9 Ops/sec
isEqual2	1230146.0 Ops/sec
compare1	2301633.5 Ops/sec
compare2	2426963.5 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 benchmark definition and test cases to understand what's being tested.

**Benchmark Definition**

The benchmark is testing two approaches for comparing arrays:

1. Using Lodash's `isEqual` function
2. Implementing a custom comparison function (`compare`)

Lodash is a popular JavaScript library that provides utility functions for various tasks, including array manipulation and data structure validation.

**Options being compared**

The two options being compared are:

* Lodash's `isEqual` function, which takes two arrays as input and returns a boolean indicating whether they are equal or not.
* A custom comparison function (`compare`) that takes two arrays as input and returns a boolean indicating whether they are equal or not.

**Pros and Cons of each approach**

1. **Lodash's `isEqual` function:**
	* Pros:
		+ Efficient implementation, optimized for performance
		+ Easy to use and understand, with a clear and concise API
		+ Provides additional features like deep equality checking and support for complex data structures
	* Cons:
		+ Additional dependency on Lodash library
		+ May have slower startup times due to the need to load the library
2. **Custom comparison function (`compare`):**
	* Pros:
		+ No additional dependencies, as it's a simple implementation
		+ Fast and efficient, with minimal overhead
	* Cons:
		+ Requires manual implementation of array comparison logic, which can be error-prone
		+ May not provide the same level of convenience or flexibility as Lodash's `isEqual` function

**Other considerations**

When choosing between these two approaches, consider the following factors:

* Performance: If speed is critical, the custom comparison function might be a better choice. However, if you prioritize ease of use and convenience, Lodash's `isEqual` function might be a better fit.
* Complexity: If you need to compare complex data structures or perform deep equality checks, Lodash's `isEqual` function provides additional features that can simplify your implementation.

**Individual test cases**

The test cases cover different scenarios:

1. `isEqual1`: Tests whether the custom comparison function (`compare`) returns the correct result for an array with identical elements.
2. `isEqual2`: Tests whether the custom comparison function (`compare`) returns the correct result for an array with different elements in a specific position (e.g., `arr3` has `[2, 2]`, but `arr1` has `[1, 2]`).
3. `compare1`: Tests whether the custom comparison function (`compare`) returns the correct result when comparing two arrays of different lengths.
4. `compare2`: Tests whether the custom comparison function (`compare`) returns the correct result for an array with identical elements.

**Latest benchmark results**

The latest benchmark results show that:

* The custom comparison function (`compare`) returns faster execution times for `compare1` and `compare2`.
* Lodash's `isEqual` function is slightly slower than the custom implementation, but still provides accurate results.
* Chrome 86 on a Mac OS X 10.15.5 desktop platform performs well across all test cases.

Keep in mind that these results may vary depending on the specific hardware and software configurations used to run the benchmark.

Related benchmarks:

Array compare: Lodash isEqual vs JS Equality (version: 0)

Comparing performance of: isEqual1 vs isEqual2 vs compare1 vs compare2

Created: 4 years ago by: Guest

Jump to the latest result

isEqual1

isEqual2

compare1

compare2

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):