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regex-split-wc
(version: 0)
Benchmark.js
Comparing performance of:
split vs replace
Created:
2 years ago
by:
Guest
Go to the latest result
Script Preparation code:
string = 'This is string with "some quotes" and another "quotes"';
Tests:
split
string.split('"') .map((part, index) => (index % 2 === 0 ? part : `«${part}»`)) .join('')
replace
string.replace(/(")(.*?)(")/g, '«$2»')
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
split
replace
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
2 years ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36
Browser/OS:
Chrome 122 on Windows
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=511254" width="100%" height="500px"></iframe>
split
1.9M/s
replace
1.4M/s
View exact numbers
Test name
Executions per second
✓
split
1,880,757 Ops/sec
replace
1,390,375 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and explain what's being tested. **Benchmark Overview** MeasureThat.net provides a JavaScript microbenchmarking platform that allows users to create and run benchmarks. The provided JSON defines a simple benchmark with two test cases: "split" and "replace". **Test Case 1: "split"** The first test case measures the performance of the `string.split('\"')` method, which splits the input string into parts using double quotes as delimiters. However, there's an additional transformation applied to each part: if the index is even (0-based), it wraps the text in HTML entities (`«${part}»`). The resulting benchmark script looks like this: ```javascript string.split('\"') .map((part, index) => (index % 2 === 0 ? part : `«${part}»`)) .join('') ``` **Pros and Cons of the Approach** This approach is straightforward and easy to understand. However: * It may not accurately represent real-world scenarios where text wrapping is more complex. * The transformation step can introduce unnecessary overhead. **Alternative Approaches** To improve accuracy, alternative approaches could include: 1. Using a library like `dompurify` or `html-entities` to handle HTML entity encoding in a more robust way. 2. Adding additional tests with different input scenarios (e.g., single quotes, escaped characters). **Test Case 2: "replace"** The second test case measures the performance of the `string.replace(/(\")(.*?)(\")/g, '«$2»')` method, which replaces double quotes in the input string with their HTML entity equivalents. The resulting benchmark script looks like this: ```javascript string.replace(/(\")(.*?)(\")/g, '«$2»') ``` **Pros and Cons of the Approach** This approach is concise but may not be the most efficient way to handle quote replacement in a real-world application. * It uses regular expressions, which can be slower than other methods. * The `g` flag at the end of the regex pattern ensures all matches are replaced, which might not be necessary for every use case. **Library and Syntax** The `replace()` method is a built-in JavaScript function that replaces occurrences of a specified pattern in a string. In this benchmark, it's used with a regular expression to replace double quotes. There's no special JavaScript feature or syntax being tested in these benchmarks. **Other Considerations** When interpreting the benchmark results, keep in mind: * The number of executions per second is the primary metric. * Different browsers and devices may have varying performance characteristics. * The test cases are designed to measure specific aspects of string manipulation, but real-world scenarios might require additional considerations (e.g., handling errors, edge cases). **Alternatives** If you want to explore alternative benchmarks or testing approaches, consider the following: 1. Use libraries like `lodash` or `util` for more efficient string manipulation. 2. Test other JavaScript features, such as async/await or Promises. 3. Create a new benchmark with different test cases and scenarios. Feel free to ask if you have any further questions!
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