Perl::Critic::Policy::RegularExpressions::RequireExtendedFormatting.3pm

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Version: 2008-03-08 (mandriva - 01/05/08)

Section: 3 (Bibliothèques de fonctions)

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NAME

Perl::Critic::Policy::RegularExpressions::RequireExtendedFormatting

DESCRIPTION

Extended regular expression formatting allows you mix whitespace and comments into the pattern, thus making them much more readable. 
     # Match a single-quoted string efficiently...
 
     m{'[^\\']*(?:\\.[^\\']*)*'};  #Huh?
 
     #Same thing with extended format...
 
     m{ '           #an opening single quote
        [^\\']      #any non-special chars (i.e. not backslash or single quote)
        (?:         #then all of...
           \\ .     #   any explicitly backslashed char
           [^\\']*  #   followed by an non-special chars
        )*          #...repeated zero or more times
        '           # a closing single quote
      }x;

NOTES

For common regular expressions like e-mail addresses, phone numbers, dates, etc., have a look at the Regex::Common module. Also, be cautions about slapping modifier flags onto existing regular expressions, as they can drastically alter their meaning. See <http://www.perlmonks.org/?node_id=484238> for an interesting discussion on the effects of blindly modifying regular expression flags.

AUTHOR

Jeffrey Ryan Thalhammer <thaljef@cpan.org> Copyright (c) 2005-2008 Jeffrey Ryan Thalhammer. All rights reserved.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of this license can be found in the LICENSE file included with this module.