Benchmark: Lodash Uniq vs Javascript Set II

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<=10000; 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:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

Let's dive into the world of MeasureThat.net and understand what's being tested in this benchmark.

**Benchmark Definition**

The benchmark is designed to compare the performance of two approaches for removing duplicates from an array: Lodash's `uniq` function and JavaScript's built-in `Set` data structure.

**Script Preparation Code**

The script preparation code creates two arrays, `firstEqual` and `secondEqual`, each containing 10,000 elements with a common value (`i`). This is done to ensure that the duplicate removal process is applied to an array with multiple duplicates.

**Html Preparation Code**

The HTML preparation code includes a reference to Lodash's library, version 4.17.5, which is used by the `uniq` function in the benchmark.

**Individual Test Cases**

There are two test cases:

1. **Lodash Uniq**: This test case measures the performance of Lodash's `uniq` function on the prepared array.
2. **JavaScript Set**: This test case measures the performance of JavaScript's built-in `Set` data structure on the same prepared array.

**Performance Comparison**

The benchmark compares the execution speed of these two approaches:

* **Lodash Uniq**: Uses a library function that removes duplicates from an array by creating a new array with unique elements.
* **JavaScript Set**: Uses a native data structure to automatically remove duplicates, as sets only store unique values.

**Pros and Cons**

Here's a brief overview of the pros and cons of each approach:

* **Lodash Uniq**:
	+ Pros: Easy to use, well-documented library function. Provides additional functionality like preserving order or sorting.
	+ Cons: Adds overhead due to creating a new array and iterating over it.
* **JavaScript Set**:
	+ Pros: Fast and efficient, as sets are implemented in native code. No added overhead beyond the native data structure.
	+ Cons: Requires understanding of set operations and may not preserve order or sorting.

**Other Considerations**

When choosing between these two approaches:

* If you need to remove duplicates while preserving order or sorting, Lodash's `uniq` function might be a better choice due to its additional functionality.
* If performance is critical and you're working with large datasets, JavaScript's built-in `Set` data structure might be the way to go.

**Library**

Lodash is a popular JavaScript utility library that provides various functions for tasks like array manipulation, object manipulation, and more. In this benchmark, Lodash's `uniq` function is used to remove duplicates from an array.

**Special JS Feature or Syntax**

There are no special JavaScript features or syntax used in this benchmark beyond the standard language.

Related benchmarks:

Lodash Uniq vs Javascript Set II (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):