...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::CV::simple_exception_policy::exception_wrapper
// In header: <boost/date_time/constrained_value.hpp> struct exception_wrapper : public exception_type { // public member functions operator std::out_of_range() const; };