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OMN-test
(version: 0)
Comparing performance of:
lodash isEqual vs Cutsom
Created:
2 years ago
by:
Guest
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HTML Preparation code:
<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>
Script Preparation code:
window.foo = ['cat', 'dog', 'bird']; window.bar = [...window.foo];
Tests:
lodash isEqual
_.isEqual(window.foo, window.bar)
Cutsom
const shallowArrayEquality = (newArray, oldArray) => newArray.length === oldArray.length && newArray.every((element, index) => element === oldArray[index]); shallowArrayEquality(window.foo, window.bar)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
lodash isEqual
Cutsom
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
**Overview of the Benchmark** The provided benchmark, `OMN-test`, tests the performance of two different approaches to compare two arrays: using the `lodash` library's `isEqual` function and implementing a custom shallow array equality function. **Library: Lodash** Lodash is a popular JavaScript utility library that provides various functions for tasks such as array manipulation, string templating, and more. In this benchmark, `lodash` is used to implement the `isEqual` function, which checks if two arrays are equal by comparing their elements in both order and content. **Custom Implementation: Shallow Array Equality** The custom implementation, also known as "Cutsom", uses a simple recursive function to check if two arrays have the same length and elements at corresponding indices. This approach is often faster than using a library like `lodash` because it avoids the overhead of function calls and returns. **Pros and Cons of Each Approach** * **Lodash:** + Pros: - Well-tested and widely adopted, which can lead to more reliable results. - Provides a standardized way of comparing arrays. + Cons: - Adds an external dependency, which may slow down the benchmark. - Can be slower than custom implementations due to function call overhead. * **Custom Implementation (Shallow Array Equality):** + Pros: - Faster and more lightweight compared to using `lodash`. - Avoids adding an external dependency. + Cons: - Requires manual implementation, which can lead to errors if not done correctly. - May not be as widely adopted or well-tested as the `lodash` version. **Other Considerations** * **Browser and Device Platform:** The benchmark results are reported for a specific browser (Chrome 116) and device platform (Desktop). This is likely due to the test harness's focus on this particular setup. * **Number of Executions Per Second:** The benchmark reports the number of executions per second, which indicates how many times the test case was run during the benchmarking process. This value can help engineers understand the performance characteristics of each approach. **Other Alternatives** If you want to compare array equality without using `lodash`, you could consider other libraries like: * `Array.prototype.every()` and `Array.prototype.some()`: These methods are part of the ECMAScript standard and provide a more lightweight way to check if all or some elements in an array match a condition. * `WeakSet`: A `WeakSet` can be used to create a set of unique values from an array, which can then be compared for equality. However, keep in mind that these alternatives may not be as widely adopted or well-tested as the `lodash` version.
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