...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::units::si::second_base_unit
// In header: <boost/units/base_units/si/second.hpp> struct second_base_unit : public base_unit< second_base_unit, time_dimension, -7 > { // public static functions static std::string name(); static std::string symbol(); };