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Lodash isEqual
(version: 0)
Comparing performance of:
isEqual vs stringify
Created:
6 years ago
by:
Guest
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HTML Preparation code:
<script src="https://cdn.jsdelivr.net/npm/lodash/lodash.min.js"></script>
Script Preparation code:
window.mock = ['asdfd', [ { count: 1569, id: 1205, title: 'Asien' }, { count: 205, id: 766, title: 'Donau' }, { count: 750, id: 1159, title: 'Emirate und Orient' }, { count: 675, id: 1042, title: 'Kanarische Inseln' }, { count: 2719, id: 1037, title: 'Karibik' }, { count: 3461, id: 768, title: 'Mittelmeer' }, ]]; window.test = ['asdfd', [ { count: 1569, id: 1205, title: 'Asien' }, { count: 205, id: 766, title: 'Donau' }, { count: 750, id: 1159, title: 'Emirate und Orient' }, { count: 675, id: 1042, title: 'Kanarische Inseln' }, { count: 2719, id: 1037, title: 'Karibik' }, { count: 3461, id: 768, title: 'Mittelmeer' }, ]];
Tests:
isEqual
_.isEqual(window.mock, window.test)
stringify
JSON.stringify(window.mock) === JSON.stringify(window.test)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
isEqual
stringify
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark and explain what's being tested, compared, and other considerations. **Benchmark Overview** The benchmark is for Lodash's `isEqual` function, which compares two objects or arrays for equality. The test cases are created using JavaScript's built-in `JSON.stringify()` method to convert objects to strings. **Test Cases** There are two test cases: 1. **`stringify`**: This test case compares the result of `JSON.stringify(window.mock)` with `JSON.stringify(window.test)`. In essence, it checks if converting both arrays to strings produces the same output. 2. **`isEqual`**: This test case uses Lodash's `isEqual` function to compare `window.mock` and `window.test` directly. **Comparison** The comparison between these two approaches is what makes this benchmark interesting. Both methods should produce the same result, as `JSON.stringify()` converts objects to strings by recursively traversing their properties. However: * **`stringify`**: This method has a few advantages: + It's more straightforward and easier to understand. + It doesn't require importing any external libraries (Lodash). + It works well for simple cases, like arrays of numbers or strings. * **`isEqual`**: This method has some disadvantages: + It requires importing Lodash, which might add extra overhead. + It's more complex and may have performance implications due to the library's optimizations. However, `isEqual` is likely optimized for performance and handles more edge cases than a simple string comparison. In practice, the difference in performance between these two approaches will be negligible unless you're working with extremely large datasets or profiling your code extensively. **Library: Lodash** Lodash is a popular JavaScript utility library that provides various helper functions for tasks like object manipulation, array processing, and more. The `isEqual` function is part of Lodash's collection of equality tests, which helps developers ensure their data structures are consistent across different parts of the application. **Special JS Feature/Syntax: None** There are no special JavaScript features or syntax used in this benchmark. It only relies on standard JavaScript built-in functions and libraries (Lodash). **Alternatives** If you wanted to create a similar benchmark, you could consider these alternatives: * Use a different equality testing library, like `assert-equal` or `deep-equal`. * Implement your own custom comparison function using JavaScript's built-in methods. * Create a benchmark for the `JSON.stringify()` method itself, comparing its performance across different browsers and hardware configurations. Keep in mind that these alternatives would require significant modifications to the benchmark code and might not offer substantial improvements over the original implementation.
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