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test test 1234faf
(version: 0)
test test test
Comparing performance of:
regex vs split
Created:
5 years ago
by:
Guest
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Script Preparation code:
var s = "arn:aws:sts::912317665613:assumed-role/test_role/5938b2e2670d05e86a266addfc5c14bb18a20cfa";
Tests:
regex
s.match('(?<=\/).*?(?=\/)')[0];
split
s.split('/')[1];
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
regex
split
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
gemma2:9b
, generated one year ago):
This benchmark on MeasureThat.net compares two different ways to extract the second part of a string representing an AWS ARN (Amazon Resource Name). **Here's a breakdown:** * **Test Case 1: "regex"** * **Method:** Uses a regular expression `(?<=\\/).*?(?=\\/)` to find the substring between two forward slashes (`/`). * **Pros:** Can be very precise for complex patterns. * **Cons:** Regular expressions can be harder to read and debug compared to simpler approaches. Performance can vary depending on the complexity of the regex. * **Test Case 2: "split"** * **Method:** Splits the string using the `/` character as a delimiter and then takes the second element (`s.split('/')[1]`). * **Pros:** More straightforward to understand. Often faster for simple tasks like this. * **Cons:** Less flexible than regex if you need to handle more complex patterns in the string. **Other Considerations:** * **Context Matters:** For this specific scenario, using `split` is likely more efficient and readable. * **Alternative Libraries:** While no libraries are used explicitly in these examples, JavaScript offers powerful string manipulation libraries like Lodash or Ramda that could provide optimized functions for similar tasks. Let me know if you have any other questions!
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