Benchmark: Lodash Uniq vs Javascript Set (lol4)

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.5/lodash.min.js"></script>

Tests:

Lodash Uniq
const firstEqual = []; for (let i = 0; i <= 100000; i++) { for (let j = 0; j < 2; j++) { firstEqual.push(i); } } _.uniq(firstEqual);
Javascript Set
const firstEqual = new Set(); for (let i = 0; i <= 100000; i++) { for (let j = 0; j < 2; j++) { firstEqual.add(i); } } Array.from(firstEqual);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash Uniq
Javascript Set

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 dive into the world of JavaScript microbenchmarks and explore what's being tested in this specific benchmark.

**Benchmark Overview**

The provided JSON defines a benchmark that compares two approaches to remove duplicates from an array: Lodash's `uniq` function and a simple implementation using JavaScript sets. The test is designed to measure which approach performs better, and it runs on multiple browsers.

**Options Compared**

Two options are being compared:

1. **Lodash Uniq**: This uses the `_.uniq` function from the Lodash library, which removes duplicates from an array while preserving the original order.
2. **JavaScript Set**: This uses a simple implementation with JavaScript sets to remove duplicates from an array.

**Pros and Cons**

### Lodash Uniq

Pros:

* Convenient and efficient way to remove duplicates
* Preserves the original order of elements
* Well-tested and widely used library

Cons:

* Adds extra overhead due to the use of a library
* May have slower performance compared to a simple implementation

### JavaScript Set

Pros:

* Lightweight and fast, with minimal overhead
* Uses native JavaScript functionality, making it highly optimized

Cons:

* Preserves the original order is not guaranteed (elements are added in insertion order)
* Can be less convenient to implement and debug

**Library: Lodash**

Lodash is a popular utility library for JavaScript that provides a wide range of functions for common tasks such as array manipulation, object transformation, and more. The `uniq` function is just one example of the many useful functions available in Lodash.

**Special JS Feature/Syntax**

There doesn't appear to be any special JavaScript features or syntax used in this benchmark. Both tests use standard JavaScript and Lodash functionality.

**Other Considerations**

When designing benchmarks, it's essential to consider factors like:

* Test size: The benchmark uses an array of 100,000 elements, which is a reasonable size for testing performance.
* Algorithmic complexity: The test compares two algorithms with different trade-offs (convenience vs. speed).
* Browser and platform variations: The benchmark runs on multiple browsers and platforms, making it more representative of real-world usage.

**Alternative Approaches**

Other alternatives to remove duplicates from an array could include:

1. Using a data structure like a `Map` or a `Set` with the element as the key.
2. Implementing a custom algorithm using sorting and filtering.
3. Using a library like Immutable.js for more functional programming approaches.

Keep in mind that each approach has its pros and cons, and the best choice depends on the specific use case and requirements.

Related benchmarks:

Lodash Uniq vs Javascript Set (lol4) (version: 0)

Comparing performance of: Lodash Uniq vs Javascript Set

Created: 6 years ago by: Guest

Jump to the latest result

Lodash Uniq

Javascript Set

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):