Benchmark: Lodash Uniq vs Javascript Set to array

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);
Spread set array
[...new Set(arrayToDedup)]
Array from set
Array.from(new Set(arrayToDedup))

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash Uniq
Spread set array
Array from 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 provided benchmark and its options.

**Benchmark Definition:**

The benchmark measures the performance of three different approaches to remove duplicates from an array:

1. `_.uniq(arrayToDedup)` using Lodash
2. `[...new Set(arrayToDedup)]` (Spread set array)
3. `Array.from(new Set(arrayToDedup))`

**Options Compared:**

The benchmark is comparing three approaches to remove duplicates from an array:

* **Lodash Uniq**: Uses the `_uniq` function from Lodash library, which removes duplicate elements from an array.
* **Spread Set Array**: Converts the array to a set using the spread operator (`[...new Set(arrayToDedup)]`) and then converts it back to an array.
* **Array.from Set**: Converts the array to a set using `new Set()` and then uses `Array.from()` to convert it back to an array.

**Pros and Cons:**

1. **Lodash Uniq**:
	* Pros: Efficient, lightweight, and easy to use.
	* Cons: Requires an external library (Lodash), which may not be available in all environments.
2. **Spread Set Array**:
	* Pros: Lightweight, easy to implement, and does not require an external library.
	* Cons: May have performance overhead due to the conversion between array and set.
3. **Array.from Set**:
	* Pros: Efficient, as it leverages the built-in `Set` data structure.
	* Cons: May not be supported in older browsers or environments.

**Library:**

In this benchmark, Lodash is used as a library to provide the `_uniq` function. Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks such as array manipulation, string templating, and more.

**Special JS Feature/Syntax:**

The spread operator (`[...new Set(arrayToDedup)]`) is used in the Spread set array approach. This feature was introduced in ECMAScript 2015 (ES6) and allows for creating a new array by spreading elements from an existing array or other iterable.

**Other Alternatives:**

If you don't want to use Lodash, you can also implement the `_uniq` function yourself using JavaScript's built-in `Array.prototype.filter()` method:
```javascript
function uniq(array) {
  return [...new Set(array)].filter((value, index, self) => self.indexOf(value) === index);
}
```
Alternatively, you can use other libraries such as `lodash-es` (a subset of Lodash with modern ES6+ features) or `arrays-uniq` (a lightweight implementation of the `_uniq` function).

In summary, the benchmark is comparing three approaches to remove duplicates from an array: Lodash's `_uniq` function, the spread set array approach, and the `Array.from Set` approach. Each has its pros and cons, and understanding these trade-offs can help you choose the best approach for your specific use case.

Related benchmarks:

Lodash Uniq vs Javascript Set to array (version: 0)

Comparing performance of: Lodash Uniq vs Spread set array vs Array from set

Created: 5 years ago by: Guest

Jump to the latest result

Lodash Uniq

Spread set array

Array from 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):