structure.rb in structure-0.27.4 vs structure.rb in structure-0.27.5

@@ -49,10 +49,18 @@
     def inherited(subclass)
       subclass.instance_variable_set(:@attribute_names, @attribute_names.dup)
     end
 
     def attribute(name, &blk)
-      define_method(name, &blk)
+      define_method("_#{name}", blk)
+      private "_#{name}"
+
+      module_eval <<-END
+        def #{name}
+          @#{name} ||= _#{name}
+        end
+      END
+
       @attribute_names << name
     end
   end
 end