...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::log::tuple_manipulator<TupleT, void>
// In header: <boost/log/utility/manipulators/tuple.hpp> template<typename TupleT> class tuple_manipulator<TupleT, void> { public: // member classes/structs/unions template<typename StreamT> struct output_visitor { // types typedef void result_type; // construct/copy/destruct explicit output_visitor(StreamT &) noexcept; // public member functions template<typename T> result_type operator()(T const &) const; }; // construct/copy/destruct explicit tuple_manipulator(TupleT const &) noexcept; // public member functions template<typename StreamT> void output(StreamT &) const; };