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split vs regex (dot)
(version: 0)
Comparing performance of:
split vs regex
Created:
3 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var host = "abc.def.ksd.zxc.net"
Tests:
split
var values = host.split("."); var value1 = values[0];
regex
var regex = new RegExp(/[^.]*/); var name = regex.exec(host).toString();
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
split
regex
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'd be happy to help explain the JavaScript microbenchmark on MeasureThat.net. **What is being tested?** The benchmark measures the performance of two approaches for splitting a string: using the `split()` method and using regular expressions (regex). In this specific benchmark, the input string is `"abc.def.ksd.zxc.net"`. The test cases aim to find out which approach is faster for this particular input. **Options compared** There are two options being compared: 1. **`split()` method**: This method splits a string into an array of substrings using a specified separator (in this case, `.`). It's a built-in JavaScript function that's widely supported. 2. **Regular expressions (regex)**: In this approach, a regex pattern is created to match any characters except `.` (`[^.]*`), and then the `exec()` method is used to find the first match in the input string. **Pros and cons of each approach** 1. **`split()` method** * Pros: + Simple and easy to understand + Fast and efficient for small inputs + Built-in JavaScript function, making it widely supported * Cons: + May be slower for large inputs or complex separators + Can be less flexible than regex patterns 2. **Regular expressions (regex)** * Pros: + Highly flexible and customizable + Can handle complex patterns and edge cases + Can be faster for very large inputs or complex matching scenarios * Cons: + Steeper learning curve due to the syntax + May be slower than the `split()` method for small inputs **Library used** There is no explicit library mentioned in the benchmark definition, but the `exec()` method is part of the JavaScript RegExp object. However, it's worth noting that some browsers or environments might not support the `RegExp` object or its methods. **Special JS feature or syntax** None are explicitly mentioned in this benchmark. The use of regex patterns and the `split()` method is a standard JavaScript feature. **Other alternatives** If you wanted to test other approaches for string splitting, some alternative options could include: * Using a library like Lodash's `string` module * Implementing a custom string splitting algorithm using loops or recursive functions * Using a different data structure, such as an array of objects, to store the input values Keep in mind that the performance differences between these alternatives might be significant, depending on the specific use case and requirements. Overall, this benchmark provides a simple yet informative way to compare the performance of two widely used string splitting approaches in JavaScript.
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