17 MonthDay() : initialized(
false) {}
18 MonthDay(
const std::string& value) : value(value), initialized(
true) {}
20 MonthDay& operator=(
const std::string& rop);
21 operator std::string()
const;
26 static const char debugName[];
27 const char* debugString()
const;
29 friend std::istream& operator>>(std::istream& lop, MonthDay& rop);
30 friend std::ostream& operator<<(std::ostream& os,
const MonthDay& obj);