Benchmark: Lodash Uniq vs Javascript Set (100K)

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<=100000; i++) {
  firstEqual.push(i);
  secondEqual.push(i);
}

var arrayToDedup = [...firstEqual, ...secondEqual];

Tests:

Lodash Uniq
_.uniq(arrayToDedup);
Javascript Set
[...new Set(arrayToDedup)]

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 what is being tested in this benchmark.

**What is being tested?**

The provided JSON represents two test cases:

1. `_.uniq(arrayToDedup)` (Lodash Uniq)
2. `[...new Set(arrayToDedup)]` (Javascript Set)

Both tests aim to measure the performance of removing duplicate elements from an array using two different approaches: a library function (`_.uniq`) and a native JavaScript method (`Set`).

**Options compared**

In this benchmark, we have:

* Lodash Uniq (a library function)
* Javascript Set (a native JavaScript method)

**Pros and Cons**

1. **Lodash Uniq**
	* Pros:
		+ Easy to use and understand for developers familiar with Lodash.
		+ Often used in development libraries and frameworks.
	* Cons:
		+ Can be slower due to the overhead of a library function.
		+ May not perform as well on smaller datasets.
2. **Javascript Set**
	* Pros:
		+ Native implementation, so it's likely to be faster than a library function.
		+ Less overhead compared to a library function.
	* Cons:
		+ Requires understanding of the `Set` data structure and its usage.
		+ May not work as expected in older browsers or versions that don't support `Set`.

**Other considerations**

* The benchmark uses an array with 100,000 elements, which is a large dataset. This may help to eliminate any small-performance variations caused by other factors, such as string comparisons or iteration order.
* Both tests use the same input data (`arrayToDedup`), which ensures that the results are fair and comparable.

**Library and syntax used**

The test case uses Lodash version 4.17.5 and the `Set` constructor with the spread operator (`[...new Set(arrayToDedup)]`). No special JavaScript features or syntax are mentioned.

**Alternatives**

Other alternatives for removing duplicates from an array could include:

* Using a custom implementation with manual iteration and array manipulation.
* Utilizing other libraries, such as jQuery's `unique()` method or Moment.js's `unique` function.
* Leveraging the `reduce()` method with a callback function to remove duplicates.

Keep in mind that these alternatives may have their own trade-offs in terms of performance, readability, and compatibility.

Related benchmarks:

Lodash Uniq vs Javascript Set (100K) (version: 0)

Comparing performance of: Lodash Uniq vs Javascript Set

Created: 3 years ago by: Guest

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):