none.rb in muina-0.5.0

- old
+ new

@@ -42,20 +42,24 @@
       end
 
       def map
         self
       end
-      
+
       def map_none
         Maybe.return yield
       end
 
       def bind
         self
       end
 
       def bind_none
         yield
+      end
+
+      def ==(other)
+        self.class == other.class
       end
     end
   end
 end