Benchmark: isEqual vs map + join w/obj

HTML Preparation code:

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

Script Preparation code:

window.foo = [{width: 12}, {width: 13}, {width: 14} ];
window.bar = [{width: 12}, {width: 13}, {width: 14}];

Tests:

isEqual
_.isEqual(window.foo, window.bar)
join
window.foo.map(c => c.width).join('') === window.bar.map(c => c.width).join('')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
isEqual
join

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and its test cases.

**What is tested?**

The benchmark compares two JavaScript microbenchmarks: `_.isEqual` from Lodash and `map + join` with an object (`window.foo` and `window.bar`).

**Options compared**

There are two options being compared:

1. **Lodash's `_.isEqual()`**: This function checks if two objects are equal, considering all their properties and values.
2. **`map + join` with an object**: This approach involves using the `map()` method to transform an array of objects into a new array with only one property (in this case, `width`) and then using the `join()` method to concatenate these widths into a string.

**Pros and Cons**

1. **Lodash's `_.isEqual()`**:
	* Pros: Concise, efficient, and well-tested.
	* Cons: May have performance overhead due to the additional function call.
2. **`map + join` with an object**:
	* Pros: Can be optimized for performance by avoiding unnecessary array operations (e.g., concatenation).
	* Cons: More verbose code, which can lead to errors or maintenance issues.

**Library and its purpose**

The benchmark uses Lodash, a popular JavaScript library that provides a wide range of utility functions for tasks like string manipulation, object manipulation, and more. In this case, `_.isEqual()` is used to compare two objects.

**Special JS feature or syntax**

There isn't any special JavaScript feature or syntax being tested in this benchmark. The code is standard JavaScript, using modern features like template literals and arrow functions.

**Other alternatives**

In this specific benchmark, the alternative approach would be not using Lodash's `_.isEqual()` at all, instead relying on a custom implementation of object comparison. However, this would likely introduce performance issues due to the lack of optimization.

Another alternative could be using a different library or framework that provides an optimized object comparison function, such as `===` or a homegrown solution.

Related benchmarks:

isEqual vs map + join w/obj (version: 0)

Comparing performance of: isEqual vs join

Created: 6 years ago by: Guest

Jump to the latest result

isEqual

join

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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