Benchmark: Lodash vs Javascript Set Intersection

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var first = _.range(0, 10000, 4);
var second = _.range(0, 10000, 2);

Tests:

Javascript Set Intersection
const firstSet = new Set(first); const secondSet = new Set(second); new Set([...firstSet].filter(item => secondSet.has(item)));
Lodash Intersection
_.intersection(first, second)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Javascript Set Intersection
Lodash Intersection

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 benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark measures the performance of two approaches to find the intersection between two arrays:

1. **JavaScript Set Intersection**: This approach uses the `Set` data structure to store the arrays, and then filters out elements from one set based on their presence in the other set.
2. **Lodash Intersection**: This approach uses the `lodash` library's `intersection` function, which is optimized for performance.

**Options Compared**

The benchmark compares two approaches:

1. **Native JavaScript Set Intersection**: Uses the built-in `Set` data structure to store and manipulate arrays.
	* Pros: Fast, lightweight, and widely supported.
	* Cons: May not be as efficient as a custom implementation or a specialized library.
2. **Lodash Intersection**: Uses the `lodash` library's optimized `intersection` function.
	* Pros: Faster and more robust than the native JavaScript approach.
	* Cons: Requires an external dependency, which may introduce overhead.

**Library Used**

The benchmark uses the `lodash` library version 4.17.5. Lodash is a popular utility library for JavaScript that provides various functions for tasks like string manipulation, array manipulation, and more. The `intersection` function in Lodash is specifically designed to find the intersection between two arrays or sets.

**Special JS Feature/Syntax**

There is no specific JavaScript feature or syntax being tested in this benchmark. However, it's worth noting that both approaches rely on the use of sets, which are a built-in data structure in JavaScript.

**Other Alternatives**

If you're looking for alternatives to the native JavaScript Set Intersection approach, some other options include:

1. **Array.prototype.filter()**: This method can be used to filter elements from one array based on their presence in another array.
2. **Custom implementation using a loop**: You could write a custom function that iterates through both arrays and checks for element equality.
3. **Specialized libraries like Ramda or MathJS**: These libraries provide optimized functions for tasks like set intersection, which may be faster than the native JavaScript approach.

In conclusion, the benchmark measures the performance of two approaches to find the intersection between two arrays: a native JavaScript Set Intersection approach and an Lodash Intersection approach using the `lodash` library. The results can help developers understand the trade-offs between these approaches in terms of performance and dependencies.

Related benchmarks:

Lodash vs Javascript Set Intersection (version: 0)

Comparing performance of: Javascript Set Intersection vs Lodash Intersection

Created: 6 years ago by: Guest

Jump to the latest result

Javascript Set Intersection

Lodash Intersection

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):