...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::intrusive::hash
// In header: <boost/intrusive/options.hpp> template<typename Hash> struct hash { // member classes/structs/unions // @ template<class Base> struct pack { // types typedef Hash hash; }; };