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rbuckton.github.io
| | www.regular-expressions.info
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| | In a regular expression, parentheses can be used to group regex tokens together and for creating backreferences. Backreferences allow you to reuse part of the regex match in the regex, or in the replacement text.
| | www.mdk-photo.com
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| | rdrr.io
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| | [AI summary] This document explains the use of regular expressions in R, covering both extended and Perl-like regular expressions with their syntax, metacharacters, and applications.
| | github.com
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| Regular expressions processor in JavaScript. Contribute to DmitrySoshnikov/regexp-tree development by creating an account on GitHub.