...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::impl::rolling_count_impl
// In header: <boost/accumulators/statistics/rolling_count.hpp> template<typename Sample> struct rolling_count_impl : public accumulator_base { // types typedef std::size_t result_type; // construct/copy/destruct rolling_count_impl(dont_care); // public member functions template<typename Args> result_type result(Args const &) const; template<typename Archive> void serialize(Archive &, const unsigned int); };