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compare arrays without order
(version: 0)
Comparing performance of:
lodash difference vs set
Created:
3 years ago
by:
Guest
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Script Preparation code:
const array1 = ['chive', 'is', 'a', 'fluffy', 'bun']; const array2 = ['chive', 'is', 'a', 'fluffy', 'bun'];
Tests:
lodash difference
const array1 = ['chive', 'is', 'a', 'fluffy', 'bun']; const array2 = ['chive', 'is', 'a', 'fluffy', 'bun']; const isEqual = array1.length === array2.length && _.difference(array1, array2) === [];
set
const array1 = ['chive', 'is', 'a', 'fluffy', 'bun']; const array2 = ['chive', 'is', 'a', 'fluffy', 'bun']; const set1 = new Set(array1); const set2 = new Set(array2); const isEqual = array1.length === array2.length && [...set1].filter(x => !set2.has(x)) === [];
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
lodash difference
set
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the world of JavaScript microbenchmarks. **What is being tested?** The provided JSON represents two benchmark test cases, both measuring how fast JavaScript can compare and detect differences between two arrays without considering their order. **Options compared:** There are two options being compared: 1. **Lodash difference**: This option uses the Lodash library to calculate the difference between two arrays. The `_.difference()` function returns an array of elements that are in the first array but not in the second. 2. **Set comparison**: This option uses JavaScript's built-in `Set` data structure to compare two arrays. A `Set` is an unordered collection of unique values. **Pros and Cons:** 1. **Lodash difference**: * Pros: + Easy to read and understand, thanks to Lodash's concise API. + Well-maintained library with extensive documentation. * Cons: + Adds additional overhead due to the need for an external library. + May not be suitable for production environments where extra dependencies are not desired. 2. **Set comparison**: * Pros: + No additional overhead, as it only uses built-in JavaScript data structures. + Suitable for production environments, as it does not add any extra dependencies. * Cons: + May require more complex code to achieve the same result. + Can be slower due to the need to convert arrays to sets and then filter out differences. **Library: Lodash** Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks such as array manipulation, object transformation, and functional programming. The `_.difference()` function is part of Lodash's "More Utilities" module, which is used here to calculate the difference between two arrays. **Special JS feature: ES6 Sets** The Set comparison option uses JavaScript's built-in `Set` data structure, which was introduced in ECMAScript 2015 (ES6). The `Set` data structure provides a fast and efficient way to store unique values, making it suitable for this benchmark test case. **Other alternatives:** If you're interested in exploring other options, here are a few: 1. **Array.prototype.filter()**: You can use the `filter()` method on an array to achieve similar results to Set comparison. However, this approach may be slower than using a built-in data structure like Set. 2. **Third-party libraries**: There are other third-party libraries available that provide efficient set operations, such as [lodash-set](https://github.com/borncampbell/lodash-set) or [set-ops](https://github.com/jakub-yan/set-ops). 3. **Native implementation**: In some cases, you may be able to implement a similar comparison using native JavaScript functions, such as `Array.prototype.indexOf()` and array slicing. However, this approach can be more complex and error-prone than using built-in data structures or libraries. In summary, the choice of option depends on your specific use case, performance requirements, and personal preference. The Lodash difference option provides an easy-to-understand and well-maintained solution, while the Set comparison option offers a lightweight alternative with no additional dependencies.
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