perl::critic::policy::variables::prohibitperl4packagenames(3pm) [debian man page]

Perl::Critic::Policy::Variables::ProhibitPerl4PackageNamUserpContributed Perl DocumPerl::Critic::Policy::Variables::ProhibitPerl4PackageNames(3pm)

NAME

       Perl::Critic::Policy::Variables::ProhibitPerl4PackageNames - Use double colon (::) to separate package name components instead of single
       quotes (').

AFFILIATION

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

DESCRIPTION

       Perl 5 kept single quotes ("'") as package component separators in order to remain backward compatible with prior "perl"s, but advocated
       using double colon ("::") instead.  In the more than a decade since Perl 5, double colons have been overwhelmingly adopted and most people
       are not even aware that the single quote can be used in this manner.  So, unless you're trying to obfuscate your code, don't use them.

	   package Foo::Bar::Baz;    #ok
	   package Foo'Bar'Baz;      #not ok

CONFIGURATION

       This Policy is not configurable except for the standard options.

SEE ALSO

       perlmod

AUTHOR

       Elliot Shank "<perl@galumph.com>"

COPYRIGHT

       Copyright (c) 2007-2011 Elliot Shank.

       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.

perl v5.14.2							    2012-06-07	   Perl::Critic::Policy::Variables::ProhibitPerl4PackageNames(3pm)

Perl::Critic::Policy::Variables::RequireInitializationFoUseraContributed PerlPerl::Critic::Policy::Variables::RequireInitializationForLocalVars(3)

NAME

       Perl::Critic::Policy::Variables::RequireInitializationForLocalVars - Write "local $foo = $bar;" instead of just "local $foo;".

AFFILIATION

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

DESCRIPTION

       Most people don't realize that a localized copy of a variable does not retain its original value.  Unless you initialize the variable when
       you "local"-ize it, it defaults to "undef".  If you want the variable to retain its original value, just initialize it to itself.  If you
       really do want the localized copy to be undef, then make it explicit.

	   package Foo;
	   $Bar = '42';

	   package Baz;

	   sub frobulate {

	       local $Foo::Bar; 	     #not ok, local $Foo::Bar is 'undef'
	       local $Foo::Bar = undef;      #ok, local $Foo::Bar is obviously 'undef'
	       local $Foo::Bar = $Foo::Bar;  #ok, local $Foo::Bar still equals '42'

	   }

CONFIGURATION

       This Policy is not configurable except for the standard options.

AUTHOR

       Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>

COPYRIGHT

       Copyright (c) 2005-2011 Imaginative Software Systems.  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.

perl v5.16.3							    2014-06-0Perl::Critic::Policy::Variables::RequireInitializationForLocalVars(3)