Extracting particular string in a file and storing matched string in output file Post: 302402621

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perl::critic::policy::controlstructures::prohibitlabelswithspeci

Perl::Critic::Policy::ControlStructures::ProhibitLabelsWUserpContPerl::Critic::Policy::ControlStructures::ProhibitLabelsWithSpecialBlockNames(3pm)

NAME

       Perl::Critic::Policy::ControlStructures::ProhibitLabelsWithSpecialBlockNames - Don't use labels that are the same as the special block
       names.

AFFILIATION

       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION

       When using one of the special Perl blocks "BEGIN", "END", "CHECK", "INIT", and "UNITCHECK", it is easy to mistakenly add a colon to the end
       of the block name.  E.g.:

	   # a BEGIN block that gets executed at compile time.
	   BEGIN { <...code...> }

	   # an ordinary labeled block that gets executed at run time.
	   BEGIN: { <...code...> }

       The labels "BEGIN:", "END:", etc. are probably errors.  This policy prohibits the special Perl block names from being used as labels.

CONFIGURATION

       This Policy is not configurable except for the standard options.

SEE ALSO

       The Perl Buzz article on this issue at http://perlbuzz.com/2008/05/colons-invalidate-your-begin-and-end-blocks.html
       <http://perlbuzz.com/2008/05/colons-invalidate-your-begin-and-end-blocks.html>.

ACKNOWLEDGMENT

       Randy Lauen for identifying the problem.

AUTHOR

       Mike O'Regan

COPYRIGHT

       Copyright (c) 2008-2011 Mike O'Regan.  All rights reserved.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.14.2							 Perl::Critic::Policy::ControlStructures::ProhibitLabelsWithSpecialBlockNames(3pm)