...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::program_options::invalid_option_value
// In header: <boost/program_options/errors.hpp> class invalid_option_value : public boost::program_options::validation_error { public: // construct/copy/destruct invalid_option_value(const std::string &); invalid_option_value(const std::wstring &); };