Benchmark: lodash uniq vs spread new Set()

HTML Preparation code:


<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js'></script>

Tests:

Spread
return new Set([1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7])
use lodash
return _.uniq([1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7]);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Spread
use lodash

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.

**Benchmark Definition**

The benchmark definition is provided as a JSON object, which contains information about the test case being run. In this case, there are two test cases: "Spread" and "use lodash". The first test case simply creates a new Set from an array of 16 elements with some duplicates. The second test case uses the Lodash library's `uniq` function to achieve the same result.

**Options Compared**

The benchmark is comparing two approaches:

1. **Direct Set Creation**: This approach creates a new Set using the built-in `Set` constructor, as shown in the first test case: `return new Set([1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7])`.
2. **Lodash uniq Function**: This approach uses the Lodash library's `uniq` function to remove duplicates from an array, as shown in the second test case: `return _.uniq([1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7])`.

**Pros and Cons**

Here are some pros and cons of each approach:

**Direct Set Creation**

Pros:

* Lightweight: Creating a new Set is a lightweight operation that doesn't incur significant overhead.
* Fast: Accessing elements in a Set is generally fast.

Cons:

* Error-prone: If the input array has duplicate values, it may lead to unexpected behavior or errors when trying to access elements.

**Lodash uniq Function**

Pros:

* Robust: The Lodash library provides a robust implementation of the `uniq` function that handles edge cases and duplicates correctly.
* Convenient: Using an existing library can simplify code and reduce development time.

Cons:

* Overhead: Including an external library adds overhead, which may impact performance in some cases.
* Dependence on external library: The benchmark relies on the Lodash library being installed and available, which may not always be the case.

**Other Considerations**

* **Use of a Library**: Using a library like Lodash can make code more readable and maintainable, but it also introduces dependencies that may impact performance.
* **JavaScript Features**: Neither test case uses any special JavaScript features or syntax. The benchmark is focused on comparing two approaches to removing duplicates from an array.

**Other Alternatives**

If you're interested in exploring alternative approaches, here are a few options:

1. **Using `filter()` and `includes()`**: You can use the `filter()` method to remove elements that don't match a condition, and then check if each remaining element is included in the original array using the `includes()` method.
2. **Using a custom implementation**: If you want to implement your own duplicate removal algorithm, you can explore various approaches, such as using a hash table or a trie data structure.

Keep in mind that these alternatives may have different performance characteristics and trade-offs compared to the Lodash implementation.

Related benchmarks:

lodash uniq vs spread new Set() (version: 0)

Comparing performance of: Spread vs use lodash

Created: 2 years ago by: Guest

Jump to the latest result

Spread

use lodash

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):