...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards
...one of the most highly regarded and expertly designed C++ library projects in the world.
boost::intrusive::tag
template<typename Tag> struct tag { };
This option setter specifies the type of the tag of a base hook. A type can not have two base hooks of the same type, so a tag can be used to differentiate two base hooks with otherwise same type