...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::attributes::counter::impl_generic
// In header: <boost/log/attributes/counter.hpp> class impl_generic : public counter< T >::impl { public: // construct/copy/destruct impl_generic(value_type, long); // public member functions attribute_value get_value(); };