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Perl::CriPerl::Critic:UseriContributedePerleDocumentationzationForLocalVars(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 v5.2Perl::Critic::Policy::Variables::RequireInitializationForLocalVars(3)

NAME | AFFILIATION | DESCRIPTION | CONFIGURATION | AUTHOR | COPYRIGHT

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