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lodash uniq vs set 1
(version: 0)
Comparing performance of:
Set vs Array
Created:
2 years ago
by:
Guest
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HTML Preparation code:
<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js'></script>
Tests:
Set
var l = Array.from(new Set([1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7])); return 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>
Run tests (2)
Previous results
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Test case name
Result
Set
Array
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.1:latest
, generated one year ago):
Let's dive into the details of this benchmark test. **What is being tested?** The benchmark tests two different approaches to removing duplicates from an array: 1. Using the `Set` data structure in JavaScript (specifically, the `new Set()` constructor) followed by `Array.from()`. 2. Using a popular JavaScript library called Lodash (`_.uniq()` function). **What options are compared?** The test cases compare the performance of two approaches to removing duplicates from an array: * Approach 1: Using `Set` and `Array.from()` (Test Name: "Set") * Approach 2: Using Lodash's `_.uniq()` function (Test Name: "Array") **Pros and Cons of each approach** ### Approach 1: Set Pros: * **Efficient memory usage**: The `Set` data structure uses a hash table internally, which allows for fast lookup and insertion operations. This can lead to better performance and lower memory usage compared to other approaches. Cons: * **Limited functionality**: While the `Set` data structure is great for removing duplicates, it's not suitable for more complex use cases or when you need to maintain a specific order of elements. * **Not widely supported**: Although `Set` has been available in modern browsers since 2015 (ES6), older browsers and some environments might not support it. ### Approach 2: Lodash (`_.uniq()`) Pros: * **Wide compatibility**: Lodash is a well-maintained library with broad browser support, making it a safe choice for many use cases. * **Flexibility**: The `_.uniq()` function can handle more complex scenarios, such as removing duplicates while maintaining a specific order. Cons: * **Additional dependencies**: Using Lodash means adding an extra dependency to your project, which can increase the overall bundle size and potentially introduce new issues. * **Performance overhead**: While Lodash is generally fast, using it might incur some performance overhead due to the additional library code being executed. **Other considerations** * The test results show that Approach 1 (Set) outperforms Approach 2 (Lodash) in this specific benchmark. However, the actual performance difference may vary depending on your use case and environment. * If you're building a web application with broad browser support requirements, Lodash's compatibility might be a deciding factor. **Library: Lodash** Lodash is a popular JavaScript library that provides a wide range of functions for common tasks like array manipulation, string processing, and more. In this benchmark, the `_.uniq()` function is used to remove duplicates from an array. If you're interested in learning more about Lodash or its other features, feel free to explore their documentation. That's it! I hope this explanation helps software engineers with varying levels of JavaScript knowledge understand what's being tested and compared in this benchmark test.
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