- const value_type & const_data() const throw() { return value; }
- value_type & data() throw() { return value; }
- operator const value_type&() const throw() { return value; }
- bool res_empty() const throw() { return !is_set; }
+ const T & const_data() const throw() { return value; }
+ T & data() throw() { return value; }
+ const T & data() const throw() { return value; }
+ bool empty() const throw() { return !is_set; }