X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FSafe%2FIsa.pm;h=206e1dac8d2817a17d790e0e6183842ae4c5338e;hb=6270ca6fd73f6306a242396da63fd83c646edbde;hp=680a71b232e13f86d88ec5b1c37891d920d8bcc1;hpb=762424c093174a99aea2aa303679e0ae32419a3e;p=p5sagit%2FSafe-Isa.git

diff --git a/lib/Safe/Isa.pm b/lib/Safe/Isa.pm
index 680a71b..206e1da 100644
--- a/lib/Safe/Isa.pm
+++ b/lib/Safe/Isa.pm
@@ -5,13 +5,17 @@ use warnings FATAL => 'all';
 use Scalar::Util qw(blessed);
 use Exporter 5.57 qw(import);
 
-our $VERSION = '1.000004';
+our $VERSION = '1.000006';
 
 our @EXPORT = qw($_call_if_object $_isa $_can $_does $_DOES);
 
 our $_call_if_object = sub {
   my ($obj, $method) = (shift, shift);
+  # This is intentionally a truth test, not a defined test, otherwise
+  # we gratuitously break modules like Scalar::Defer, which would be
+  # un-perlish.
   return unless blessed($obj);
+  return $obj->isa(@_) if lc($method) eq 'does' and not $obj->can($method);
   return $obj->$method(@_);
 };
 
@@ -20,6 +24,11 @@ our ($_isa, $_can, $_does, $_DOES) = map {
   sub { my $obj = shift; $obj->$_call_if_object($method => @_) }
 } qw(isa can does DOES);
 
+1;
+__END__
+
+=pod
+
 =head1 NAME
 
 Safe::Isa - Call isa, can, does and DOES safely on things that may not be objects
@@ -145,6 +154,11 @@ returns nothing.
 If called on an object, calls C<method_name> on it and returns the result,
 otherwise returns nothing.
 
+=head1 SEE ALSO
+
+I gave a lightning talk on this module (and L<curry> and L<Import::Into>) at
+L<YAPC::NA 2013|https://www.youtube.com/watch?v=wFXWV2yY7gE&t=46m05s>.
+
 =head1 AUTHOR
 
 mst - Matt S. Trout (cpan:MSTROUT) <mst@shadowcat.co.uk>