english(3pm) [mojave man page]

English(3pm)						 Perl Programmers Reference Guide					      English(3pm)

NAME

       English - use nice English (or awk) names for ugly punctuation variables

SYNOPSIS

	   use English;
	   use English qw( -no_match_vars ) ;  # Avoids regex performance penalty
					       # in perl 5.16 and earlier
	   ...
	   if ($ERRNO =~ /denied/) { ... }

DESCRIPTION

       This module provides aliases for the built-in variables whose names no one seems to like to read.  Variables with side-effects which get
       triggered just by accessing them (like $0) will still be affected.

       For those variables that have an awk version, both long and short English alternatives are provided.  For example, the $/ variable can be
       referred to either $RS or $INPUT_RECORD_SEPARATOR if you are using the English module.

       See perlvar for a complete list of these.

PERFORMANCE

       NOTE: This was fixed in perl 5.20.  Mentioning these three variables no longer makes a speed difference.  This section still applies if
       your code is to run on perl 5.18 or earlier.

       This module can provoke sizeable inefficiencies for regular expressions, due to unfortunate implementation details.  If performance matters
       in your application and you don't need $PREMATCH, $MATCH, or $POSTMATCH, try doing

	  use English qw( -no_match_vars ) ;

       .  It is especially important to do this in modules to avoid penalizing all applications which use them.

perl v5.18.2							    2014-01-06							      English(3pm)

Perl::Critic::Policy::Variables::ProhibitLocalVars(3pm) User Contributed Perl DocumentationPerl::Critic::Policy::Variables::ProhibitLocalVars(3pm)

NAME

       Perl::Critic::Policy::Variables::ProhibitLocalVars - Use "my" instead of "local", except when you have to.

AFFILIATION

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

DESCRIPTION

       Since Perl 5, there are very few reasons to declare "local" variables.  The most common exceptions are Perl's magical global variables.	If
       you do need to modify one of those global variables, you should localize it first.  You should also use the English module to give those
       variables more meaningful names.

	   local $foo;	 #not ok
	   my $foo;	 #ok

	   use English qw(-no_match_vars);
	   local $INPUT_RECORD_SEPARATOR    #ok
	   local $RS			    #ok
	   local $/;			    #not ok

CONFIGURATION

       This Policy is not configurable except for the standard options.

NOTES

       If an external module uses package variables as its interface, then using "local" is actually a pretty sensible thing to do.  So
       Perl::Critic will not complain if you "local"-ize variables with a fully qualified name such as $Some::Package::foo.  However, if you're in
       a position to dictate the module's interface, I strongly suggest using accessor methods instead.

SEE ALSO

       Perl::Critic::Policy::Variables::ProhibitPunctuationVars

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