Benchmark: Lodash Uniq vs Javascript Set for mahyar

HTML Preparation code:

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

Script Preparation code:

var firstEqual = [];
var secondEqual = [];

for (var i=0; i<=50000; i++) {
  firstEqual.push(i);
  secondEqual.push(i);
}

var arrayToDedup = [...firstEqual, ...secondEqual];

Tests:

Lodash Uniq
_.uniq(arrayToDedup);
Javascript Set
[...new Set(arrayToDedup)]

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 break down the benchmark and explain what's being tested, compared, and other considerations.

**What is being tested?**

The benchmark measures two approaches to removing duplicates from an array:

1. **Lodash `uniq`**: This method uses a library (Lodash) to implement a unique value for each element in the array.
2. **JavaScript Set**: This approach creates a new Set object from the array, which automatically removes duplicates.

**Options compared**

The benchmark compares two options:

* Lodash `uniq`: A pre-built function that implements a deduplication algorithm using JavaScript's built-in `Set` data structure internally.
* JavaScript Set: A native JavaScript feature that allows creating a collection of unique values by converting an array to a Set.

**Pros and Cons**

* **Lodash `uniq`**:
	+ Pros:
		- Well-tested and optimized implementation
		- Handles edge cases (e.g., empty arrays, null/undefined values)
	+ Cons:
		- Requires including the Lodash library in the test environment
		- May have overhead due to the additional library dependency
* **JavaScript Set**:
	+ Pros:
		- Native implementation with minimal dependencies
		- High performance and low latency
	+ Cons:
		- Requires a basic understanding of JavaScript Sets (not explicitly tested in this benchmark)

**Library - Lodash**

Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks like data manipulation, string manipulation, and more. The `uniq` function from Lodash is specifically designed to remove duplicate values from an array.

**Special JS feature - JavaScript Sets**

JavaScript Sets are a native data structure in modern browsers, introduced in ECMAScript 2015 (ES6). A Set is a collection of unique values that cannot have duplicates. In this benchmark, the `Set` object is used to create a new collection of unique values from the input array.

**Other alternatives**

If not using Lodash or JavaScript Sets, alternative approaches for removing duplicates could include:

* **Array.prototype.filter()**: Using the `filter()` method to remove elements that don't meet a certain condition.
* **Array.prototype.reduce()**: Using the `reduce()` method to accumulate unique values from an array.
* **Manual iteration and comparison**: Using a simple loop to iterate over the input array, comparing each element with previously seen elements.

Keep in mind that these alternatives might have varying levels of performance, readability, and maintainability compared to using Lodash or JavaScript Sets.

Related benchmarks:

Lodash Uniq vs Javascript Set for mahyar (version: 0)

Comparing performance of: Lodash Uniq vs Javascript Set

Created: 5 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):