...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::weighted_extended_p_square>
// In header: <boost/accumulators/statistics/extended_p_square.hpp> struct feature_of<tag::weighted_extended_p_square> { };