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perlretutNAMEDESCRIPTIONPart 1: The basicso Simple word matchingo Using character classeso Matching this or thato Grouping things and hierarchical matchingo Extracting matcheso Backreferenceso Relative backreferenceso Named backreferenceso Alternative capture group numberingo Position informationo Non-capturing groupingso Matching repetitionso Possessive quantifierso Building a regexpo Using regular expressions in PerlPart 2: Power toolso More on characters, strings, and character classeso Compiling and saving regular expressionso Composing regular expressions at runtimeo Embedding comments and modifiers in a regular expressiono Looking ahead and looking behindo Using independent subexpressions to prevent backtrackingo Conditional expressionso Defining named patternso Recursive patternso A bit of magic: executing Perl code in a regular expressiono Backtracking control verbso Pragmas and debuggingBUGSSEE ALSOAUTHOR AND COPYRIGHTo AcknowledgmentsNAMEperlretut - Perl regular expressions tutorialDESCRIPTIONThis page provides a basic tutorial on understanding, creating and using regular expressions in Perl. Itserves as a complement to the reference page on regular expressions perlre. Regular expressions are anintegral part of them//, s///, qr// and split operators and so this tutorial also overlapswith Regexp Quote-Like Operators in perlopand split.Perl is widely renowned for excellence in text processing, ...


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