lib/sugarcube/notifications.rb in sugarcube-0.9 vs lib/sugarcube/notifications.rb in sugarcube-0.9.1

@@ -1,8 +1,8 @@
 class NSString
 
   def post_notification(object=nil, user_info=nil)
-    if user_info and not Hash === user_info
+    if user_info and not user_info.is_a? Hash
       raise TypeError("Invalid argument #{user_info.class.name} sent to String.post_notification")
     end
 
     if user_info
       NSNotificationCenter.defaultCenter.postNotificationName(self, object:object, userInfo:user_info)