...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::type_erasure::check_match
// In header: <boost/type_erasure/check_match.hpp> template<typename Concept, typename Op, class... U> bool check_match(const binding< Concept > & binding, const Op & f, U &&... args); template<typename Op, class... U> bool check_match(const Op & f, U &&... args);