lib/structure/double.rb in structure-1.0.1 vs lib/structure/double.rb in structure-1.0.2

@@ -1,6 +1,7 @@
 module Structure
+  # ClassMethods
   module ClassMethods
     def double
       klass = Class.new(self)
 
       (
@@ -11,12 +12,13 @@
         klass.send(:undef_method, name)
       end
 
       klass.module_eval do
         def initialize(data = {})
-          data.each { |key, value|
+          data.each do |key, value|
+            value.freeze unless value.is_a?(Structure)
             instance_variable_set(:"@#{key}", value)
-          }
+          end
         end
 
         attribute_names.each do |name|
           module_eval "def _#{name}; @#{name}; end"
           private "_#{name}"