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exec vs replace
(version: 0)
Comparing performance of:
exec vs replace
Created:
2 years ago
by:
Guest
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Script Preparation code:
str = '<p style="margin: 0; line-height: 1.5"><span style="font-size: 18pt; font-family: Times New Roman; font-weight: normal ; font-style: normal; text-decoration: none"><span data-variable="true" data-type="TEXTAREA">{{{description}}}</span></span></p><p style="margin: 0; line-height: 1.5"></p><p style="margin: 0; line-height: 1.5"></p><table><tbody><tr><td colspan="1" rowspan="1" style="width: 380.33093525179856pt; height: 18.75pt; vertical-align: top; border: 0.5pt solid #000" colwidth="507.1079136690647" colheight="25" data-border="true"><p style="margin: 0; line-height: 1.5"><span style="font-size: 18pt; font-family: Times New Roman; font-weight: normal ; font-style: normal; text-decoration: none"><span data-variable="true" data-type="TEXTAREA">{{{DealProduct.[0].product.description}}}</span></span></p></td><td colspan="1" rowspan="1" style="width: 380.33093525179856pt; height: 18.75pt; vertical-align: top; border: 0.5pt solid #000" colwidth="507.1079136690647" colheight="25" data-border="true"><p style="margin: 0; line-height: 1.5"><span style="font-size: 18pt; font-family: Times New Roman; font-weight: normal ; font-style: normal; text-decoration: none">продукт сделки</span></p></td></tr></tbody></table><p style="margin: 0; line-height: 1.5"></p><p style="margin: 0; line-height: 1.5"></p><p style="margin: 0; line-height: 1.5"></p><table><tbody><tr><td colspan="1" rowspan="1" style="width: 267pt; height: 18.75pt; vertical-align: top; border: 0.5pt solid #000" colwidth="356" colheight="25" data-border="true"><p style="margin: 0; line-height: 1.5"><span style="font-size: 18pt; font-family: Times New Roman; font-weight: normal ; font-style: normal; text-decoration: none"><span data-variable="true" data-type="TEXTAREA">{{{Task.[0].description}}}</span></span></p></td><td colspan="1" rowspan="1" style="width: 267pt; height: 18.75pt; vertical-align: top; border: 0.5pt solid #000" colwidth="356" colheight="25" data-border="true"><p style="margin: 0; line-height: 1.5"><span style="font-size: 18pt; font-family: Times New Roman; font-weight: normal ; font-style: normal; text-decoration: none">задачи</span></p></td></tr></tbody></table><p style="margin: 0; line-height: 1.5"></p><p style="margin: 0; line-height: 1.5"><span style="font-size: 18pt; font-family: Times New Roman; font-weight: normal ; font-style: normal; text-decoration: none"><span data-variable="true" data-type="TEXTAREA">{{{createdBy.division.description}}}</span></span></p>'; re = /<span(?=(?:[^>]*style="([^"]*)")?)[^>]*?><span[^>]*data-type="TEXTAREA"[^>]*>{{{(.*?)}}}<\/span>/;
Tests:
exec
re.exec(str)[1] re.exec(str)[2]
replace
str.replace(re, (_, m1,m2) => { return _ })
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
exec
replace
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
gemma2:9b
, generated one year ago):
This benchmark compares two methods for extracting text within specific HTML tags from a given string: **Method 1: `re.exec()`** * This method uses a regular expression (`re`) to find the first occurrence of a pattern in the string. * `re.exec(str)[1]` accesses the matched text (the content between the <span> tags) * `re.exec(str)[2]` accesses the captured group within the `<span>` tag, which is assumed to be the variable substitution (`{{{description}}}`, etc.) **Method 2: `str.replace()`** * This method uses a regular expression as part of the replacement function to find and replace occurrences of the pattern in the string. * `re` captures two groups within the matched `<span>` tag. These are used to build the new string (`_`), effectively replacing the original content with a placeholder. The captured groups `m1` and `m2` would contain the styles and variable substitution content respectively. **Pros and Cons:** * **Method 1 (`re.exec()`):** * **Pros:** Can be more efficient for finding single occurrences, especially if you only need to extract specific data once. It's straightforward to access captured groups. * **Cons:** If you need to replace all occurrences, `re.exec()` would require iterating through the string repeatedly. * **Method 2 (`str.replace()`):** * **Pros:** Efficient for replacing multiple occurrences in a single operation. The replacement function allows for more complex transformations if needed. * **Cons:** Can be less efficient than `re.exec()` if you only need to find a single occurrence. **Other Considerations:** * **Performance:** The benchmark results show that the `replace` method is faster in this specific case, likely because it performs all replacements at once. * **Readability:** The `replace` method might be more readable for simple substitutions, especially if you only need to replace a few occurrences. **Alternatives:** * **DOM Parsing:** If the HTML is being used within a web page, using JavaScript's DOM (Document Object Model) API would provide a more structured way to select and manipulate elements. * **String Manipulation Methods:** Libraries like Lodash offer string manipulation functions that might be suitable for specific use cases. Let me know if you have any other questions.
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