Provided by: librecommended-perl_0.003-1_all bug


       recommended - Load recommended modules on demand when available


       version 0.003


           use recommended 'Foo::Bar', {
               'Bar::Baz' => '1.23',
               'Wibble'   => '0.14',

           if ( recommended->has( 'Foo::Bar' ) ) {
               # do something with Foo::Bar

           # default version required
           if ( recommended->has( 'Wibble' ) ) {
               # do something with Wibble if >= version 0.14

           # custom version required
           if ( recommended->has( 'Wibble', '0.10' ) ) {
               # do something with Wibble if >= version 0.10


       This module gathers a list of recommended modules and versions and provides means to check
       if they are available.  It is a thin veneer around Module::Runtime.

       There are two major benefits over using Module::Runtime directly:

       ·   Self-documents recommended modules together with versions at the top of your code,
           while still loading them on demand elsewhere.

       ·   Dies if a recommended module exists but fails to compile, but doesn't die if the
           module is missing or the version is insufficient.  This is not something that
           Module::Runtime offers in a single subroutine.


           use recommended 'Foo::Bar', {
               'Bar::Baz' => '1.23',
               'Wibble'   => '0.14',

       Scalar import arguments are treated as module names with a minimum required version of
       zero.  Hash references are treated as module/minimum-version pairs.  If you repeat, the
       later minimum version overwrites the earlier one.

       The list of modules and versions are kept separate for each calling package.

           recommended->has( $module );
           recommended->has( $module, $alt_minimum_version );

       The "has" method takes a module name and optional alternative minimum version requirement
       and returns true if the following conditions are met:

       ·   the module was recommended in the current package (via "use recommended")

       ·   the module can be loaded

       ·   the module meets the default or alternate minimum version

       Otherwise, it returns false.  If the module exists but fails to compile, an error is
       thrown.  This avoids some edge-cases where things are left in an incomplete state or
       subsequent normal loads of the module by other packages get a misleading error.

       The module is loaded without invoking the module's "import" method, as running import on
       an optional module at runtime is just weird.


       ·   Module::Runtime

       ·   Test::Requires


   Bugs / Feature Requests
       Please report any bugs or feature requests through the issue tracker at
       <>.  You will be notified automatically of
       any progress on your issue.

   Source Code
       This is open source software.  The code repository is available for public review and
       contribution under the terms of the license.


         git clone


       David Golden <>


       This software is Copyright (c) 2014 by David Golden.

       This is free software, licensed under:

         The Apache License, Version 2.0, January 2004