...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::gregorian::bad_weekday — Exception that flags that a weekday number is incorrect.
// In header: <boost/date_time/gregorian/greg_weekday.hpp> struct bad_weekday { // construct/copy/destruct bad_weekday(); };