Benchmark: uniq vs set to array

HTML Preparation code:

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

Tests:

set to array
var l = new Set([1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7]); return Array.from(l);
uniq
var l = [1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7]; return _.uniq(l);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
set to array
uniq

Fastest: N/A

Slowest: N/A

Latest run results:

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark definition and test cases.

**Benchmark Definition:**
The benchmark measures the performance of two approaches to create an array with unique elements:

1. Using a `Set` data structure, which automatically removes duplicates by its nature.
2. Using the `_.uniq()` function from the Lodash library, which also removes duplicates from an array.

**Script Preparation Code:**
This code is empty, but it's likely intended to set up any necessary dependencies or environment variables for the benchmark.

**Html Preparation Code:**
This code includes a script tag that loads the Lodash library (version 4.17.10) from a CDN. This suggests that the benchmark will use Lodash's `uniq` function.

**Individual Test Cases:**

1. **"set to array"**: This test case uses the `Set` data structure to create an array with unique elements. The script:
```javascript
var l = new Set([1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7]);
return Array.from(l);
```
This creates a `Set` with the specified elements and then uses `Array.from()` to convert it to an array. The resulting array will have unique elements.

2. **"uniq"**: This test case uses Lodash's `_.uniq()` function to create an array with unique elements. The script:
```javascript
var l = [1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7];
return _.uniq(l);
```
This creates an array with the specified elements and then passes it to Lodash's `_.uniq()` function, which removes duplicates from the array.

**Options Compared:**
The benchmark compares two approaches:

1. Using a `Set` data structure to create an array with unique elements.
2. Using Lodash's `_.uniq()` function to create an array with unique elements.

**Pros and Cons of Each Approach:**

1. **Using a Set data structure:**
	* Pros:
		+ Efficient, as sets automatically remove duplicates by their nature.
		+ Fast iteration over the set is possible using `for...in` or `forEach()`.
	* Cons:
		+ May not be suitable for large datasets, as it requires extra memory to store the set.
		+ Not all browsers support sets (e.g., Internet Explorer).
2. **Using Lodash's _.uniq():**
	* Pros:
		+ Works in most modern browsers that support JavaScript.
		+ Easy to use and understand, especially for developers familiar with Lodash.
	* Cons:
		+ May be slower than using a set data structure, as it involves iterating over the original array.
		+ Additional dependency on Lodash.

**Other Considerations:**

1. **Browser Support:** The benchmark uses Firefox 101 as the test browser. Other browsers may have different performance characteristics or support for sets and Lodash's `_.uniq()` function.
2. **Data Size:** The provided dataset has 14 elements, which is relatively small. Larger datasets may require adjustments to the benchmark to avoid excessive memory usage or slow execution times.

**Alternatives:**

1. Using a `Map` data structure instead of a `Set`, as maps are also suitable for removing duplicates and provide fast iteration.
2. Implementing the own unique element detection logic using bitwise operations or other techniques, which might be more efficient than relying on sets or Lodash's `_.uniq()`.
3. Considering alternative libraries or frameworks that provide similar functionality to Lodash's `_.uniq()`, such as Underscore.js or Ramda.

Related benchmarks:

uniq vs set to array (version: 0)

Comparing performance of: set to array vs uniq

Created: 3 years ago by: Guest

Jump to the latest result

set to array

uniq

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):