Benchmark: lodash uniq vs set 2

HTML Preparation code:

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

Tests:

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

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 benchmark and explain what's being tested, compared, and considered.

**Benchmark Overview**

The benchmark compares two approaches for removing duplicate elements from an array or set: using a JavaScript `Set` object (Array) versus using the `_uniq` function from the Lodash library (Array).

**Options Compared**

Two options are being compared:

1. **Using a JavaScript Set**: This approach creates a new `Set` object from an array, which automatically removes duplicates. The resulting set is then converted back to an array using `Array.from()`.
2. **Using Lodash's `_uniq` function**: This approach uses the Lodash library to call its `_uniq` function on the input array, which also removes duplicates.

**Pros and Cons of Each Approach**

1. **JavaScript Set**:
	* Pros: Native JavaScript support, fast execution.
	* Cons: Requires converting back to an array using `Array.from()`, which may incur additional overhead.
2. **Lodash's `_uniq` function**:
	* Pros: Provides a concise and expressive way to remove duplicates, easy to read and maintain.
	* Cons: Adds extra library dependency (Lodash), potential performance impact due to the additional function call.

**Library Used**

The Lodash library is used in one of the benchmark test cases. The `_uniq` function from Lodash is designed to remove duplicate elements from an array while preserving the original order.

**Special JS Feature/Syntax**

None are explicitly mentioned, but note that using `Array.from()` to convert a set back to an array may have implications for performance and memory usage in some cases.

**Other Considerations**

* The benchmark only compares the two approaches on a single element test case (removing duplicate values). In more complex scenarios with multiple elements, other factors like sorting, indexing, or iteration order might also be relevant.
* The benchmark does not consider other possible ways to remove duplicates from an array, such as using `filter()`, `reduce()`, or custom implementation.

**Alternatives**

Other approaches for removing duplicate elements from an array include:

1. Using `filter()` with a callback function to exclude duplicates: `arr.filter((element, index) => arr.indexOf(element) === index)`
2. Using `reduce()` to accumulate unique elements: `arr.reduce((acc, element) => acc.includes(element) ? acc : [...acc, element])`
3. Implementing a custom solution using bitwise operations or other methods

Keep in mind that each approach has its trade-offs, and the best solution depends on specific requirements, performance needs, and use case constraints.

In summary, this benchmark compares two approaches for removing duplicates from an array: using JavaScript `Set` versus Lodash's `_uniq` function. It highlights the pros and cons of each method, considering factors like native support, performance, and library dependency.

Related benchmarks:

lodash uniq vs set 2 (version: 0)

Forked as parent returns a set. For apples to apples comparison need to return Array.

Comparing performance of: Set vs Array

Created: 5 years ago by: Guest

Jump to the latest result

Set

Array

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):