...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::tag::error_of<mean>
// In header: <boost/accumulators/statistics/error_of_mean.hpp> struct error_of<mean> : public boost::accumulators::depends_on< lazy_variance, count > { };