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This page covers the very basics of understanding, creating and using regular expressions ('regexes') in Perl.


Regexes in Perl are not he same as in Python, Ruby, or PHP, even if some of them call them "Perl 5 compatible Regular Expressions".


Perl regular expressions display an efficiency and flexibility unknown in most other computer languages. Mastering even the basics of regular expressions will allow you to manipulate text with surprising ease.


There are three regular expression operators within Perl.


Without regular expressions, Perl would be a fast development environment. Probably a little faster than VB for console apps. With the addition of regular expressions, Perl exceeds other RAD environments five to twenty-fold in the hands of an experienced practitioner...


Perl has a richer and more predictable syntax than even the POSIX Extended Regular Expressions syntax. An example of its predictability is that \ always quotes a non-alphanumeric character. An example of something that is possible to specify with Perl but not POSIX is whether part of the match...


Because of Perl's focus on managing and mangling text, regular expression text patterns are an integral part of the Perl language. This in contrast with most other languages, where regular expressions are available as add-on libraries.


● Unlike most programming languages, Perl has built-in support for matching strings using regular expressions called patterns, which are similar to the regular expressions used in Unix utilities, like grep.


Regular Expression Operator m// in Perl.


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