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Lodash flatten
(version: 0)
Comparing performance of:
Native vs Lodash
Created:
4 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:
Native
const arr = [1, 2, [3,4],5]; const uniqs = arr.flat(); return uniqs;
Lodash
const arr = [1, 2, [3,4],5]; return _.flatten(arr);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Native
Lodash
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided JSON and explain what's being tested. **Benchmark Overview** The benchmark is designed to measure the performance of two approaches: using native JavaScript functionality and using the popular Lodash library to flatten an array with nested elements. **Test Cases** There are two test cases: 1. **Native**: This test case uses only native JavaScript functions to flatten the array, without any external libraries. It defines a constant `arr` containing an array with a nested element and then calls the `flat()` method on it. 2. **Lodash**: This test case uses the Lodash library to flatten the same array. The benchmark includes the script tag for the Lodash library in the HTML preparation code. **Options Compared** The two approaches are compared in terms of performance, specifically: * Time taken by each approach to execute the flattening operation * Number of executions per second **Pros and Cons of Each Approach** **Native:** Pros: * No external dependencies or overhead from loading a library * Only uses built-in JavaScript functions, which might be more efficient in some cases Cons: * Requires manual implementation of the flattening logic * May not be as concise or readable as using a dedicated library **Lodash:** Pros: * Concise and readable code using a well-known and widely-used library * Reduces boilerplate code and minimizes errors Cons: * Includes an external dependency, which might add overhead or latency * Might be slower than native implementations due to the added overhead of loading and executing the library **Library: Lodash** Lodash is a popular JavaScript utility library that provides various functions for tasks such as string manipulation, array operations, and more. In this benchmark, it's used specifically for the `flatten()` function. The inclusion of Lodash adds some overhead due to its size and complexity, but also simplifies the code and reduces errors. **Special JS Feature or Syntax:** None of the provided test cases use any special JavaScript features or syntax that would require additional explanation. **Alternative Approaches** Other alternatives for flattening arrays in JavaScript include: * Using `Array.prototype.reduce()` method * Implementing a custom recursive function to flatten the array * Using a library like Ramda, which provides similar functionality to Lodash Each of these approaches has its own pros and cons, and might be more or less suitable depending on specific requirements and performance needs.
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