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Lodash trim VS native regexp
(version: 2)
Comparing performance of:
Lodash vs Native
Created:
5 years ago
by:
Registered User
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HTML Preparation code:
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.js"></script>
Script Preparation code:
var str = '&abc&';
Tests:
Lodash
_.trim(str, '&')
Native
str.replace(/^&+|&+$/g, '')
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Lodash
Native
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and explain what's being tested. **Overview** The benchmark compares two approaches to trimming a string: using Lodash (`_.trim()`) and native regular expressions (`str.replace()`). The test creates a sample string `&abc&` and measures how long it takes to perform the operation on this string across different browsers and devices. **Options Compared** There are two options being compared: 1. **Lodash (`_.trim(str, '&')`)**: This method uses Lodash's `trim()` function to remove leading and trailing characters from the input string. The `&` character is specified as the separator. 2. **Native Regular Expressions (`str.replace(/^&+|&+$/g, '')`)**: This method uses native JavaScript regular expressions to match and replace the specified pattern in the input string. **Pros and Cons** **Lodash (`_.trim()`):** Pros: * Easy to use and readable * Well-tested and widely adopted * Provides more flexibility with separator options Cons: * Requires an additional library (Lodash) * Might be slower due to the overhead of calling a function Native Regular Expressions (`str.replace()`): Pros: * Fast and lightweight, as it only requires native JavaScript capabilities * No additional library required Cons: * More verbose and harder to read * Less flexible with separator options **Other Considerations** The benchmark also measures the performance of the test on different browsers (Chrome 98) and devices (Desktop). **Library Used: Lodash** Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks like string manipulation, array operations, and more. In this case, it's used to implement the `_.trim()` function. **JavaScript Feature/Syntax** There are no special JavaScript features or syntax used in this benchmark. The code only uses standard JavaScript features, such as strings, regular expressions, and the `replace()` method. **Alternative Approaches** Other approaches to trimming a string could include: * Using another library (e.g., jQuery, Moment.js) * Implementing a custom trimming function from scratch * Using a different data structure (e.g., using a regular expression engine like RegExp) However, these alternatives would likely incur additional overhead or complexity compared to the native JavaScript approach used in this benchmark.
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