NAME
    Const::Exporter - Declare constants for export.

REQUIREMENTS
    This module requires Perl v5.10 or newer, and the following non-core
    modules:

    Const::Fast
    Package::Stash

SYNOPSIS
    Define a constants module:

      package MyApp::Constants;

      use Const::Fast;

      our $zoo => 1234;

      use Const::Exporter

         tag_a => [                  # use MyApp::Constants /:tag_a/;
            'foo'  => 1,             # exports "foo"
            '$bar' => 2,             # exports "$bar"
            '@baz' => [qw/ a b c /], # exports "@baz"
            '%bo'  => { a => 1 },    # exports "%bo"
         ],

         tag_b => [                  # use MyApp::Constants /:tag_b/;
            'foo',                   # exports "foo" (same as from ":tag_a")
            '$zoo',                  # exports "$zoo" (as defined above)
         ];

      # `use Const::Exporter` can be specified multiple times

      use Const::Exporter

         tag_b => [                 # we can add symbols to ":tab_b"
            'moo' => $bar,          # exports "moo" (same value as "$bar")
         ],

         enums => [

           [qw/ goo gab gub /] => 0, # exports enumerated symbols, from 0..2

         ],

         default => [qw/ fo $bar /]; # exported by default

    and use that module:

      package MyApp;

      use MyApp::Constants qw/ $zoo :tag_a /;

      ...

DESCRIPTION
    This module allows you to declare constants that can be exported to
    other modules.

SEE ALSO
    See Exporter for a discussion of export tags.

  Similar Modules
    Exporter::Constants
        This module only allows you to declare function symbol constants,
        akin to the constant module, without tags.

    Constant::Exporter
        This module only allows you to declare function symbol constants,
        akin to the constant module, although you can specify tags.

    Constant::Export::Lazy
        This module only allows you to declare function symbol constants,
        akin to the constant module by defining functions that are only
        called as needed. The interface is rather complex.

AUTHOR
    Robert Rothenberg, `<rrwo at cpan.org>'

LICENSE AND COPYRIGHT
    Copyright 2014 Robert Rothenberg.

    This program is free software; you can redistribute it and/or modify it
    under the terms of the the Artistic License (2.0). You may obtain a copy
    of the full license at:

    http://www.perlfoundation.org/artistic_license_2_0