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Manual Reference Pages  -  PERL::CRITIC::POLICY::CONTROLSTRUCTURES::PROHIBITLABELSWITHSPECIALBLOCKNAMES (3)

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NAME

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

CONTENTS

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>.

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.

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perl v5.20.3 PERL::CRITIC::POLICY::CONTROLSTRUCTURES::PROHIBITLABELSWITHSPECIALBLOCKNAMES (3) 2016-04-03

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