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Regex repeat vs inline
(version: 0)
Comparing performance of:
Regex repeat vs Regex inline
Created:
3 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
string = "111000111011101110111000000111"
Tests:
Regex repeat
string.replace(new RegExp('1'.repeat(3), 'g'), '-')
Regex inline
string.replace(new RegExp('1{3}', 'g'), '-')
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
Regex repeat
Regex inline
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
gemma2:9b
, generated one year ago):
This benchmark tests two different approaches for replacing occurrences of the sequence '111' within a string: **Option 1: `Regex repeat`:** * This approach uses the `.repeat()` method to create a regex pattern: `string.replace(new RegExp('1'.repeat(3), 'g'), '-')` * `'1'.repeat(3)` creates the string '111' dynamically. * `new RegExp('111', 'g')` constructs a regular expression to match any occurrence of '111' globally (the 'g' flag). **Option 2: `Regex inline`:** * This approach uses a direct regex pattern within the `RegExp` constructor: `string.replace(new RegExp('1{3}', 'g'), '-')` * `'1{3}'` directly specifies the pattern to match three consecutive '1' characters. **Pros and Cons:** * **Regex repeat:** * **Pro:** Can be more flexible for dynamic patterns where the repeated sequence might vary. * **Con:** Potentially less readable than the inline approach, especially for simple cases. * **Regex inline:** * **Pro:** More concise and often easier to read, particularly for fixed patterns. * **Con:** Less flexible for dynamic patterns that require repeated sequences to change. **Other Considerations:** * The benchmark's results indicate that the `Regex inline` approach is slightly faster in this specific case. However, performance differences between these approaches can be negligible in many real-world scenarios unless dealing with extremely large strings or complex patterns. Let me know if you have any more questions about this benchmark or other JavaScript concepts!
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