...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_year — Exception type for gregorian year.
// In header: <boost/date_time/gregorian/greg_year.hpp> struct bad_year : public out_of_range { // construct/copy/destruct bad_year(); };