...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::signals2::no_slots_error — Indicates a combiner was unable to synthesize a return value.
// In header: <boost/signals2/last_value.hpp> class no_slots_error : public std::exception { public: virtual const char * what() const; };
no_slots_error
exception may be thrown by signals2::last_value
when it is run but unable to obtain any results from its input iterators.
virtual const char * what() const;