X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FMouse%2FUtil%2FTypeConstraints.pm;h=0fa8ab36745d55ef11471a452d6da35bb38bb405;hb=fd2b172a4657cb6cc47976d2e66cdba4bdfa579d;hp=a5220a36f2cec4bf38c41988fd899c7130797504;hpb=420d69e8116ad08b0fbeab3289af4df9f64d3b70;p=gitmo%2FMouse.git

diff --git a/lib/Mouse/Util/TypeConstraints.pm b/lib/Mouse/Util/TypeConstraints.pm
index a5220a3..0fa8ab3 100644
--- a/lib/Mouse/Util/TypeConstraints.pm
+++ b/lib/Mouse/Util/TypeConstraints.pm
@@ -290,8 +290,9 @@ sub _find_or_create_parameterized_type{
 }
 
 sub _find_or_create_union_type{
-    return if grep{ not defined } @_;
-    my @types = sort map{ $_->{type_constraints} ? @{$_->{type_constraints}} : $_ } @_;
+    return if grep{ not defined } @_; # all things must be defined
+    my @types = sort
+        map{ $_->{type_constraints} ? @{$_->{type_constraints}} : $_ } @_;
 
     my $name = join '|', @types;
 
@@ -431,7 +432,7 @@ Mouse::Util::TypeConstraints - Type constraint system for Mouse
 
 =head1 VERSION
 
-This document describes Mouse version 0.86
+This document describes Mouse version 0.87
 
 =head2 SYNOPSIS