NAME¶
Perl::Critic::Policy::Modules::RequireBarewordIncludes - Write "require
Module" instead of "require 'Module.pm'".
AFFILIATION¶
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION¶
When including another module (or library) via the "require" or
"use" statements, it is best to identify the module (or library)
using a bareword rather than an explicit path. This is because paths are
usually not portable from one machine to another. Also, Perl automatically
assumes that the filename ends in '.pm' when the library is expressed as a
bareword. So as a side-effect, this Policy encourages people to write '*.pm'
modules instead of the old-school '*.pl' libraries.
use 'My/Perl/Module.pm'; #not ok
use My::Perl::Module; #ok
CONFIGURATION¶
This Policy is not configurable except for the standard options.
NOTES¶
This Policy is a replacement for "ProhibitRequireStatements", which
completely banned the use of "require" for the sake of eliminating
the old '*.pl' libraries from Perl4. Upon further consideration, I realized
that "require" is quite useful and necessary to enable run-time
loading. Thus, "RequireBarewordIncludes" does allow you to use
"require", but still encourages you to write '*.pm' modules.
Sometimes, you may want to load modules at run-time, but you don't know at
design-time exactly which module you will need to load (Perl::Critic is an
example of this). In that case, just attach the '## no critic' annotation like
so:
require $module_name; ## no critic
CREDITS¶
Chris Dolan <cdolan@cpan.org> was instrumental in identifying the correct
motivation for and behavior of this Policy. Thanks Chris.
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.