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split vs indexof
(version: 0)
Comparing performance of:
split vs indexof
Created:
4 years ago
by:
Guest
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Tests:
split
const accept = "text/html, application/xhtml+xml, application/xml;q=0.9, image/webp, */*;q=0.8" if (accept && accept.split(/[,;]/, 1)[0] === "text/html" ) { renderPdf = false; outputContentType = "text/html"; } else { renderPdf = true; outputContentType = "application/pdf"; }
indexof
const accept = "text/html, application/xhtml+xml, application/xml;q=0.9, image/webp, */*;q=0.8" const htmlFormatPriority = accept.indexOf("text/html"); const pdfFormatPriority = accept.indexOf("application/pdf"); if (htmlFormatPriority < 0 && pdfFormatPriority < 0) { throw `Not supported defined accepted response formats: "${accept}"` } if (pdfFormatPriority < 0 || htmlFormatPrority < pdfFormatPriority) { renderPdf = false; outputContentType = "text/html"; } else { renderPdf = true; outputContentType = "application/pdf"; }
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Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
split
indexof
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
**Benchmark Overview** The provided benchmark measures the performance difference between two approaches to parse and compare a string: `split()` vs `indexOf()`. The benchmark is designed to simulate real-world scenarios where browser accepts multiple MIME types. **Options Compared** There are two options compared: 1. **`split()`**: This method splits the string into an array of substrings, using a regular expression as the separator. In this case, it's used with `[,;]/` as the separator, which splits on both commas and semicolons. 2. **`indexOf()`**: This method returns the index of the first occurrence of a specified value in the string. **Pros and Cons** * **`split()`**: + Pros: Can handle multiple separators and can be more readable for complex scenarios. + Cons: Creates an array of substrings, which may lead to higher memory usage and slower performance compared to `indexOf()`. * **`indexOf()`**: + Pros: More efficient in terms of memory usage and execution speed, as it only searches for a single value. + Cons: May not be as readable or suitable for complex scenarios with multiple values. **Library and Special JS Features** Neither of the methods mentioned requires any external libraries. However, `indexOf()` is a built-in JavaScript method that's supported by all modern browsers. The `split()` method is also built-in, but it may require special handling for certain edge cases or older browsers. **Test Case Analysis** The test cases demonstrate the difference in performance between `split()` and `indexOf()`. The first test case uses `split()` to check if a specific MIME type is present in the `accept` string. If it's not, it sets `renderPdf` to `false` and `outputContentType` to `"text/html"`. The second test case uses `indexOf()` to achieve the same result. **Other Alternatives** Some alternative approaches to parsing and comparing strings include: * **Using a regular expression**: Instead of using `split()` or `indexOf()`, you could use a regular expression to match specific patterns in the string. This approach might offer better performance for certain scenarios. * **Using a dedicated library**: If you need to parse and compare complex data formats, such as JSON or XML, consider using a dedicated library like `json5` or `xml2js`. * **Using a more efficient algorithm**: Depending on the specific use case, you might be able to optimize the parsing and comparison process by using a more efficient algorithm or data structure. Keep in mind that these alternatives might require additional development effort and may not always offer better performance than the built-in methods.
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