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array replace string
(version: 0)
Array replaces string
Comparing performance of:
no regex vs regex
Created:
3 years ago
by:
Guest
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Tests:
no regex
const diacritics = '€âàáãåçñéêëèíîïìÀÁÃÅÑØøÉÊÈÍÎÏÌðýµÐÝ×ô¦òóõûùúÿÔÒÓÕÛÙÚÄÖÜÏßäöüïąĄęĘÓóćĆłŁńŃŚśŻżźŹ'.split(''); let value = 'Long Ócompany nameÓ before can replaceÓ'; for(let i = 0, l = diacritics.length; i < l; i++) value = value.replace(diacritics[i], `${diacritics[i]}`);
regex
const diacritics2 = /([€âàáãåçñéêëèíîïìÀÁÃÅÑØøÉÊÈÍÎÏÌðýµÐÝ×ô¦òóõûùúÿÔÒÓÕÛÙÚÄÖÜÏßäöüïąĄęĘÓóćĆłŁńŃŚśŻżźŹ])/g; let value2 = 'Long Ócompany nameÓ before can replaceÓ'; value2 = value2.replace(diacritics2, `$1${''}`);
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Suite status:
<idle, ready to run>
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Test case name
Result
no regex
regex
Fastest:
N/A
Slowest:
N/A
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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** The benchmark is designed to measure the performance of replacing strings in an array using two different approaches: 1. **No Regex**: This approach uses a simple loop to iterate over each character in the `diacritics` string and replace it with the same character followed by a Unicode escape sequence (`''`). 2. **Regex**: This approach uses a regular expression (regex) to replace all occurrences of characters in the `diacritics` string. **Options Compared** The two approaches have different pros and cons: * **No Regex**: + Pros: Simple, straightforward implementation. + Cons: May be slower than the regex approach due to the overhead of a loop. * **Regex**: + Pros: Can handle multiple characters at once, potentially faster than the no-regex approach. + Cons: May be more complex and harder to maintain. **Library/Functionality Used** In this benchmark, we're using: * The `split()` method to split the `diacritics` string into an array of individual characters. * The `replace()` method to replace each character with the same character followed by a Unicode escape sequence (`''`). * The `/g` flag at the end of the regex pattern to enable global matching. **Special JavaScript Features/Syntax** There are two special features used in this benchmark: * **Unicode Escape Sequences**: The `` notation is used to insert a Unicode character (U+200C, a non-breaking space) into the replacement string. * **Regular Expressions**: The `/g` flag at the end of the regex pattern enables global matching, which allows the regex engine to replace all occurrences of characters in the `diacritics` string. **Other Alternatives** If you were to rewrite this benchmark using other approaches, here are some alternatives: * Using a library like `regex- escape` or `unicode-escape` to handle Unicode escape sequences. * Using a more efficient data structure, such as a `Set` or `Map`, to store the characters in the `diacritics` string. * Using a different algorithm for replacing strings, such as using a trie or a suffix tree. Overall, this benchmark provides a good comparison of two approaches to replacing strings in an array, and can be used to help developers understand the trade-offs between simplicity and performance.
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