...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::accumulators::feature_of<tag::absolute_tail_variate_means< LeftRight, VariateType, VariateTag >>
// In header: <boost/accumulators/statistics/tail_variate_means.hpp> template<typename LeftRight, typename VariateType, typename VariateTag> struct feature_of<tag::absolute_tail_variate_means< LeftRight, VariateType, VariateTag >> : public boost::accumulators::feature_of< tag::abstract_absolute_tail_variate_means > { };