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.IX Title "Perl::Critic::Policy::Variables::ProhibitPerl4PackageNames 3pm"
.TH Perl::Critic::Policy::Variables::ProhibitPerl4PackageNames 3pm 2023-07-26 "perl v5.38.0" "User Contributed Perl Documentation"
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.SH NAME
Perl::Critic::Policy::Variables::ProhibitPerl4PackageNames \- Use double colon (::) to separate package name components instead of single quotes (').
.SH AFFILIATION
.IX Header "AFFILIATION"
This Policy is part of the core Perl::Critic
distribution.
.SH DESCRIPTION
.IX Header "DESCRIPTION"
Perl 5 kept single quotes (\f(CW\*(C`\*(Aq\*(C'\fR) as package component separators in
order to remain backward compatible with prior \f(CW\*(C`perl\*(C'\fRs, but advocated
using double colon (\f(CW\*(C`::\*(C'\fR) 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.
.PP
.Vb 2
\&    package Foo::Bar::Baz;    #ok
\&    package Foo\*(AqBar\*(AqBaz;      #not ok
.Ve
.SH CONFIGURATION
.IX Header "CONFIGURATION"
This Policy is not configurable except for the standard options.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
perlmod
.SH AUTHOR
.IX Header "AUTHOR"
Elliot Shank \f(CW\*(C`<perl@galumph.com>\*(C'\fR
.SH COPYRIGHT
.IX Header "COPYRIGHT"
Copyright (c) 2007\-2014 Elliot Shank.
.PP
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.