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Split vs Regex (fixed)
(version: 0)
Comparing performance of:
Splitting vs Regex
Created:
one year ago
by:
Guest
Jump to the latest result
Script Preparation code:
var testString = "testing\nNew lines\nBleh"
Tests:
Splitting
var values = testString.split("\n"); var value1 = values[0]; var value2 = values[1]; var value3 = values[2];
Regex
var regex = /.+((?=\n)|$)/g; var result = regex.exec(testString); var value1 = regex[1]; var value2 = regex[1]; var value3 = regex[3];
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Splitting
Regex
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Mobile Safari/537.36
Browser/OS:
Chrome Mobile 126 on Android
View result in a separate tab
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=531287" width="100%" height="500px"></iframe>
Test name
Executions per second
Splitting
13466458.0 Ops/sec
Regex
8554360.0 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark and explain what's being tested. **Benchmark Overview** The benchmark compares two approaches to split a string into individual lines: 1. **Split Method**: Using the `split()` method with a regular expression (`\n`) to split the string into an array of substrings. 2. **Regex Method**: Using a regular expression (`.+((?=\\n)|$)/g`) to extract individual lines from the string. **Options Compared** The two methods are compared in terms of their execution performance, measured by the number of executions per second (ExecutionsPerSecond). **Pros and Cons** * **Split Method**: + Pros: Simple, efficient, and widely supported. + Cons: May not work correctly for all types of newline characters (e.g., Windows-style `\r\n`). * **Regex Method**: + Pros: Can handle complex string processing and multiple line endings. + Cons: May be slower due to the overhead of compiling and executing a regular expression. **Other Considerations** * The benchmark uses JavaScript, which may affect the results due to differences in browser or engine implementations. * The test strings are limited, which might not represent real-world scenarios. Additional tests with diverse input data could provide more accurate insights. **Library/Functionality Used** The `split()` method is a built-in JavaScript function, while the regular expression used in the Regex Method is a custom implementation. **Special JS Feature/Syntax** None mentioned in this benchmark. However, it's worth noting that some older browsers or environments might not support modern JavaScript features, which could impact results. **Alternative Approaches** Other alternatives to compare these methods could include: * Using other string splitting functions (e.g., `substring()`, `slice()`) or libraries. * Implementing custom line detection and parsing logic using JavaScript. * Comparing performance on different platforms (e.g., desktop, mobile, server) or browsers. Keep in mind that the choice of approach depends on the specific requirements and constraints of your project.
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