def define_record_methods record
      record.class_eval <<-RUBY, __FILE__, __LINE__ + 1
        def #{name};        tuple.fetch(:#{field}, nil)   end
        def #{name}= value; tuple.store(:#{field}, value) end
      RUBY
    end
def define_record_methods record
      record.class_eval <<-RUBY, __FILE__, __LINE__ + 1
        def #{name};        tuple.fetch(:#{field}, nil)   end
        def #{name}= value; tuple.store(:#{field}, value) end
      RUBY
    end
Evals attribute accessors for this attribute into the record.