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split1 vs regex
(version: 0)
Testing regex speed against split speed on a given string
Comparing performance of:
test1 vs test2
Created:
2 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var date = "2023-10-10T10:02:54.959-12:12"
Tests:
test1
var regex = /^([+-]?\d{6}|\d{4})-(0[1-9]|1[0-2])-(0[1-9]|[12]\d|3[01])T([01]\d|2[0-3]):[0-5]\d:[0-5]\d\.\d{1,3}([+-]([01]\d|2[0-3]):[0-5]\d|Z)$/; var result = regex.test(date); console.log(result);
test2
var split = date.split("\s:+-") console.log(split)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
test1
test2
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 benchmark and explain what's being tested. **What is being tested?** The benchmark compares the performance of two approaches to parse and manipulate a date string: 1. **Regex (Regular Expression) approach**: The first test case uses a regular expression to extract the year, month, day, hour, minute, second, and timezone from the input date string. 2. **Split function approach**: The second test case splits the input date string into substrings using a specific delimiter. **Options being compared** The benchmark is comparing the performance of these two approaches on the same input data. **Pros and Cons of each approach:** 1. **Regex approach**: * Pros: Can be more flexible and powerful for complex parsing tasks, can handle various date formats. * Cons: Can be slower due to the overhead of compiling regular expressions, may require more CPU resources. 2. **Split function approach**: * Pros: Faster execution speed, as it's a built-in JavaScript function optimized for performance. * Cons: Limited flexibility and may not work well with complex date formats. **Other considerations** Both approaches have their own strengths and weaknesses: * Regex approach can be more suitable when dealing with complex or non-standard date formats. * Split function approach is generally faster and more lightweight, making it a good choice for simple date manipulation tasks. **Libraries used (if any)** In this benchmark, there are no external libraries explicitly mentioned. However, the `Date` object is being used to parse the date string, which is part of the JavaScript standard library. **Special JS feature or syntax** There doesn't seem to be any special JS features or syntax being used in these test cases. The focus is on comparing the performance of two approaches. **Other alternatives** Some alternative approaches that might be considered for parsing and manipulating dates include: * Using a dedicated date parsing library, such as Moment.js * Utilizing a JavaScript implementation of the International Organization for Standardization (ISO) 8601 standard for date and time representation. * Leveraging browser-specific APIs or functions, like `Date.parse()` or `Intl.DateTimeFormat`
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