Benchmark: Lodash uniq vs Object keys

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:


var arr = ['Jane', 'Bob', 'Kat', 'Kat', 'Bob', 'Jane', 'Ian', 'Jane', 'Bob', 'Kat', 'Kat', 'Bob', 'Jane', 'Ian'];

Array.prototype.uniqueString = function() {
    let tmpObj = {}
    for (var i = 0; i < this.length; i++) {
        tmpObj[this[i]] = this[i]
    }
    return Object.values(tmpObj)
}

Tests:

Lodash uniq
var result = _.uniq(arr);
Object keys unique
var result = arr.uniqueString();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash uniq
Object keys unique

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

Let's break down what's being tested in this benchmark.

**Benchmark Definition**

The benchmark is comparing two approaches to removing duplicate strings from an array:

1. **Lodash `uniq` method**: This is a built-in function in the Lodash library that removes duplicates from an array, preserving the original order of elements.
2. **Custom implementation using `Object.keys`**: The test case uses a custom function `uniqueString` that converts the array to an object and then back to an array, effectively removing duplicates.

**Options Compared**

The benchmark is comparing two options:

* Using a built-in function (`Lodash uniq`) vs
* Implementing a custom solution using `Object.keys`

**Pros and Cons of Each Approach**

**Built-in Function (Lodash `uniq`):**

Pros:

* Well-tested and optimized by the Lodash team
* Less prone to errors or performance issues
* Can be easily reused across different projects

Cons:

* Requires including an additional library (Lodash) in the project
* May not be suitable for extremely large datasets due to memory constraints

**Custom Implementation using `Object.keys`**

Pros:

* Does not require any external libraries
* Can potentially outperform built-in functions for very large datasets
* Allows for more control over the implementation

Cons:

* More prone to errors or performance issues if not implemented correctly
* May be slower than built-in functions due to object conversion overhead

**Other Considerations**

In terms of special JavaScript features or syntax, this benchmark does not explicitly test any advanced features. However, it's worth noting that the custom implementation using `Object.keys` relies on some basic object properties and methods.

**Library Used (Lodash)**

The Lodash library is a popular utility library for JavaScript that provides a wide range of functions for tasks such as array manipulation, string manipulation, and more. In this benchmark, the `uniq` function is used to remove duplicates from an array.

**Alternatives**

If you want to implement a custom solution without using Lodash or any external libraries, you could consider using other approaches such as:

* Using `Set` data structure to store unique elements
* Implementing a simple sorting and filtering algorithm to remove duplicates

However, keep in mind that these alternatives may not be as efficient or robust as the built-in `uniq` function provided by Lodash.

Related benchmarks:

Lodash uniq vs Object keys (version: 0)

Comparing performance of: Lodash uniq vs Object keys unique

Created: 6 years ago by: Guest

Jump to the latest result

Lodash uniq

Object keys unique

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):