lib/conf.rb in conf-0.0.1 vs lib/conf.rb in conf-0.0.2

@@ -37,9 +37,13 @@
       @parent = parent
       @data   = {}
       @current_nesting = []
     end
 
+    def key?(key)
+      @data.key?(key) || (@parent && @parent.key?(key))
+    end
+
     def freeze
       @parent && @parent.freeze
       super
     end