lib/divining_rod/mappings.rb in divining_rod-0.4.0 vs lib/divining_rod/mappings.rb in divining_rod-0.5.0

@@ -6,9 +6,10 @@
       attr_accessor :root_definition
       
       def define(opts = {})
         @root_definition = Definition.new { true }
         yield Mapper.new(@root_definition, opts)
+        @root_definition.freeze
       end
       
       def evaluate(obj)
         @root_definition.evaluate(obj)
       end