true::VERSION(3pm) User Contributed Perl Documentation true::VERSION(3pm)NAME
true::VERSION - shim to allow modules to depend on true.pm
DESCRIPTION
This module exists to work around bugs in the dependency system which prevent modules from depending on true.
Instead of depending on true, depend on true::VERSION with the same version number.
This module was introduced with version 0.16 of true.
perl v5.14.2 2011-04-18 true::VERSION(3pm)
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Perl::Critic::Policy::Modules::RequireVersionVar(3pm) User Contributed Perl Documentation Perl::Critic::Policy::Modules::RequireVersionVar(3pm)NAME
Perl::Critic::Policy::Modules::RequireVersionVar - Give every module a "$VERSION" number.
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
Every Perl file (modules, libraries, and programs) should have a package-scoped $VERSION variable. The $VERSION allows clients to insist
on a particular revision of your file like this:
use SomeModule 2.4; #Only loads version 2.4
This Policy scans your file for any package variable named $VERSION. I'm assuming that you are using "strict", so you'll have to declare
it like one of these:
our $VERSION = 1.0611;
$MyPackage::VERSION = 1.061;
use vars qw($VERSION);
use version; our $VERSION = qv(1.0611);
Perl's version system does not recognize lexical variables such as
my $VERSION = 1.0611;
so they are not accepted by this policy.
A common practice is to use the "$Revision: 4106 $" keyword to automatically define the $VERSION variable like this:
our ($VERSION) = '$Revision: 4106 $' =~ m{ $Revision: s+ (S+) }x;
CONFIGURATION
This Policy is not configurable except for the standard options.
NOTES
Conway recommends using the "version" pragma instead of raw numbers or 'v-strings.' However, this Policy only insists that the $VERSION be
defined somehow. I may try to extend this in the future.
TO DO
Add check that $VERSION is independently evaluatable. In particular, prohibit this:
our $VERSION = $Other::Module::VERSION;
This doesn't work because PAUSE and other tools literally copy your version declaration out of your module and evaluates it in isolation,
at which point there's nothing in "Other::Module", and so the $VERSION is undefined.
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.
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