From: Vincent Pit <vince@profvince.com>
Date: Sat, 7 Mar 2009 12:20:38 +0000 (+0100)
Subject: Give an example of integration with constants
X-Git-Tag: v0.04~3
X-Git-Url: http://git.vpit.fr/?p=perl%2Fmodules%2FLexical-Types.git;a=commitdiff_plain;h=e5180e775fa6b3bef100a42bd7899aba3627df8b

Give an example of integration with constants
---

diff --git a/lib/Lexical/Types.pm b/lib/Lexical/Types.pm
index c5bca1e..be4d71c 100644
--- a/lib/Lexical/Types.pm
+++ b/lib/Lexical/Types.pm
@@ -214,6 +214,37 @@ You can integrate L<Lexical::Types> in your module so that using it will provide
 
     sub new_int { ... }
 
+If you prefer to use constants rather than creating empty packages, you can replace the previous example with something like this :
+
+    package MyTypes;
+
+    BEGIN { require Lexical::Types; }
+
+    sub import {
+     my $pkg = caller;
+     for (qw/Str Int/) {
+      my $type = __PACKAGE__ . '::' . $_;
+      no strict 'refs';
+      no warnings 'redefine';
+      *{$pkg.'::'.$_} = eval "sub () { '$type' }";
+     }
+     Lexical::Types->import(
+      as => sub { $_[0] => 'new' }
+     );
+    }
+
+    sub unimport {
+     Lexical::Types->unimport;
+    }
+
+    package MyTypes::Str;
+
+    sub new { ... }
+
+    package MyTypes::Int;
+
+    sub new { ... }
+
 =head1 CAVEATS
 
 For C<perl> to be able to parse C<my Str $x>, you need :