...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::base_unit
// In header: <boost/units/base_unit.hpp> template<typename Derived, typename Dim, long N> class base_unit { public: // types typedef Dim dimension_type; // The dimensions of this base unit. typedef Derived type; // Provided for mpl compatability. typedef unspecified unit_type; // The unit corresponding to this base unit. };