NAME

       Perl::Critic::Policy::Modules::ProhibitUseQuotedVersion - avoid quoted version number
       string in a "use" statement

DESCRIPTION

       This policy is part of the "Perl::Critic::Pulp" add-on.  It asks you not to quote a
       version number string as the sole argument to a "use" or "no" statement.

           use Foo::Bar '1.50';      # bad
           use Foo::Bar 1.50;        # ok

           no Abc::Def '2.000_010';  # bad
           no Abc::Def 2.000_010;    # ok

       The unquoted form uses Perl's builtin module version check (Perl 5.004 up) and is always
       enforced.  The quoted form is passed to the module's "import()" and relies on it to do the
       check.  If there's no "import()" then the quoted form is silently ignored.

       "Exporter" as used by many modules provides an "import()" which checks a version number
       arg, so those modules are fine.  But the idea of this policy is to do what works always
       and on that basis is under the "bugs" theme (see "POLICY THEMES" in Perl::Critic).

       The builtin module version check is new in Perl 5.004.  For earlier versions both forms
       behave the same, with the string or number going through to the module "import" and so may
       or may not be checked.  But even in code supporting older Perl it's good to write the
       unquoted number so later Perl will be certain to enforce it.

       The policy only applies to a single number string argument, anything else is taken to be a
       module parameters.

           no Abc::Def '123', 'ABC';   # ok
           use lib '..';               # ok

       If you're a bit nervous about unquoting because floating point version numbers are often
       not exactly representable in binary, well, yes, that's true, but in practice it works,
       either by converting the same way everywhere in the program or by treated as a string to
       the "version.pm" module anyway.

   Disabling
       If you're confident about the "import()" in modules you use and prefer the string form you
       can always disable "ProhibitUseQuotedVersion" from your .perlcriticrc in the usual way
       (see "CONFIGURATION" in Perl::Critic),

           [-Modules::ProhibitUseQuotedVersion]

SEE ALSO

       Perl::Critic::Pulp, Perl::Critic

       Perl::Critic::Policy::ValuesAndExpressions::ProhibitVersionStrings

HOME PAGE

       <http://user42.tuxfamily.org/perl-critic-pulp/index.html>

COPYRIGHT

       Copyright 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2019, 2021 Kevin Ryde

       Perl-Critic-Pulp is free software; you can redistribute it and/or modify it under the
       terms of the GNU General Public License as published by the Free Software Foundation;
       either version 3, or (at your option) any later version.

       Perl-Critic-Pulp is distributed in the hope that it will be useful, but WITHOUT ANY
       WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
       PURPOSE.  See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with Perl-Critic-
       Pulp.  If not, see <http://www.gnu.org/licenses/>.

perl v5.32.1                         Perl::Critic::Policy::Modules::ProhibitUseQuotedVersion(3pm)