Benchmark: Set vs Lodash Uniq

HTML Preparation code:

<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.15/lodash.min.js'></script>

Tests:

Set
var s = new Set(); [1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7].forEach((x) => s.add(x)); return s;
Lodash 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
Lodash 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):

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

**Benchmark Overview**

The provided benchmark compares two approaches to achieve uniqueness in an array of numbers:

1. **Set**: Using a JavaScript `Set` object to store unique elements.
2. **Lodash Uniq**: Using the `_uniq` function from the Lodash library to remove duplicates from an array.

**Comparison Options**

The two options being compared are:

1. **Set**: This approach uses the built-in `Set` object in JavaScript, which automatically eliminates duplicate values when adding elements. The `forEach` method is used to iterate over the array and add each element to the set.
2. **Lodash Uniq**: This approach uses the `_uniq` function from the Lodash library, which removes duplicates from an array.

**Pros and Cons**

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

* **Set**:
	+ Pros:
		- Built-in JavaScript functionality, eliminating the need for external libraries.
		- Generally faster due to its native implementation.
	+ Cons:
		- Can be slower than external libraries like Lodash for very large datasets.
		- May not provide the same level of control or customization as external libraries.
* **Lodash Uniq**:
	+ Pros:
		- Provides more control and flexibility over the uniqueness operation.
		- Can handle edge cases and errors more robustly than built-in sets.
	+ Cons:
		- Requires an external library, which can add overhead and complexity.
		- May be slower due to the additional indirection.

**Library: Lodash**

Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks such as array manipulation, string manipulation, and more. The `_uniq` function is one of these utility functions, which removes duplicates from an array while preserving the original order of elements.

In this benchmark, Lodash Uniq is used to remove duplicates from the array `[1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7]`, which results in an array with unique elements.

**Special JS Feature/Syntax**

There are no special JavaScript features or syntax used in this benchmark. The code uses standard JavaScript syntax and built-in functions, along with a single external library (Lodash) for the `_uniq` function.

**Other Alternatives**

If you need to compare uniqueness operations in an array, other alternatives to Lodash Uniq could be:

* Using a different utility library, such as Ramda or Immutable.js.
* Implementing your own uniqueness algorithm using JavaScript's built-in data structures and algorithms (e.g., sorting + filtering).
* Using a third-party library like moment.js for date-related uniqueness checks.

Keep in mind that the choice of alternative will depend on your specific use case, performance requirements, and personal preference.

Related benchmarks:

Set vs Lodash Uniq (version: 0)

Comparing performance of: Set vs Lodash Uniq

Created: 3 years ago by: Guest

Jump to the latest result

Set

Lodash 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):