Benchmark: Lodash Uniq vs Javascript new Set() (small array)

HTML Preparation code:

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

Script Preparation code:

var firstEqual = [];
var secondEqual = [];

for (var i=0; i<=26; i++) {
  firstEqual.push(i);
  secondEqual.push(i);
}

var arrayToDedup = [...firstEqual, ...secondEqual];

Tests:

Lodash Uniq
return _.uniq(arrayToDedup);
Javascript Set
var l = [...new Set(arrayToDedup)]; return l;

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:

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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.

**What is tested?**

The benchmark tests two approaches to remove duplicates from an array:

1. **Lodash Uniq**: A function from the Lodash library that uses a combination of algorithms to efficiently remove duplicates from an array.
2. **JavaScript Set**: A built-in JavaScript object that automatically removes duplicates when used as an array.

**Options compared**

The benchmark compares the performance of these two approaches:

* Lodash Uniq
* JavaScript Set (using `new Set()` and spreading the array into it)

**Pros and Cons:**

* **Lodash Uniq**:
	+ Pros: Often more efficient than using a Set, especially for larger arrays, since it uses optimized algorithms.
	+ Cons: Requires an additional library (Lodash), which may introduce overhead.
* **JavaScript Set**:
	+ Pros: Built-in, easy to use, and often faster than Lodash Uniq for small to medium-sized arrays.
	+ Cons: May be slower for very large arrays due to the overhead of creating a new Set object.

**Library**

The `lodash` library is used in the benchmark. Its purpose is to provide a set of utility functions that can simplify code and make it more efficient, such as the `uniq()` function tested here.

**Special JS feature or syntax**

None mentioned explicitly in this benchmark.

**Other alternatives**

If you're looking for alternative approaches to remove duplicates from an array, some options include:

* Using the `filter()` method with a callback function that checks for duplicate values.
* Using the `reduce()` method with a callback function that accumulates unique values.
* Implementing your own custom algorithm using JavaScript's built-in data structures and operations.

In general, when choosing between these approaches, consider factors such as:

* Performance requirements (e.g., do you need to process very large arrays?)
* Code complexity and readability
* The presence of specific features or libraries in the codebase

Related benchmarks:

Lodash Uniq vs Javascript new Set() (small array) (version: 1)

Comparing performance of: Lodash Uniq vs Javascript Set

Created: 4 years ago by: Registered User

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):