Benchmark: isEqual vs map + join

HTML Preparation code:

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

Script Preparation code:

window.foo = ['cat', 'dog', 'bird'];
window.bar = ['cat', 'dog', 'bird'];

Tests:

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

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

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Let's break down the provided JSON benchmark definition and analyze what's being tested.

**Script Preparation Code**

The script preparation code sets up two variables, `window.foo` and `window.bar`, both containing an array of strings: `['cat', 'dog', 'bird']`. This creates a basic setup for comparing these arrays.

**Html Preparation Code**

The HTML preparation code includes a script tag that loads the Lodash library (version 4.17.4) from a CDN. Lodash is a popular utility library that provides various helper functions, including `isEqual`.

**Individual Test Cases**

There are two test cases:

1. **`isEqual`**: This test case uses the `_.isEqual` function from Lodash to compare the two arrays, `window.foo` and `window.bar`, for equality.
2. **`join`**: This test case maps each element in both arrays using a callback function, then joins them into strings with an empty separator. It compares these resulting strings for equality.

**Options Compared**

The two options being compared are:

* Using the `_.isEqual` function from Lodash to compare the arrays directly.
* Mappings and joining the arrays separately before comparing them.

**Pros and Cons of Each Approach:**

1. **Using `_ isEqual`**: Pros:
	* Simple and straightforward way to compare arrays for equality.
	* Less error-prone, as it's a well-tested function in Lodash.
Cons:
	* May be slower due to the overhead of calling a library function.
2. **Mapping and Joining**: Pros:
	* Can be faster, as it avoids the overhead of calling a library function.
Cons:
	* More complex and error-prone, as it requires manual handling of array operations.
	* May not be as efficient, especially for large arrays.

**Other Considerations:**

* The use of `_.isEqual` simplifies the comparison process but may introduce dependencies on Lodash. In contrast, mapping and joining require more manual effort but provide more control over the comparison process.
* The choice between these approaches depends on performance requirements and personal preference.

**Special JS Feature/Syntax:**

There is no special JavaScript feature or syntax being used in this benchmark.

**Library Usage:**

Lodash is a popular utility library that provides various helper functions, including `_.isEqual`. Its purpose is to provide a set of reusable functions for common tasks, making it easier to write maintainable and efficient code.

**Alternatives:**

If you prefer not to use Lodash, you could implement the `_ isEqual` function yourself or use alternative libraries like Array.prototype.every() and Array.prototype.filter(). However, using a well-tested library like Lodash can provide significant benefits in terms of performance and readability.

Related benchmarks:

isEqual vs map + join (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):