...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::lambda::plain_return_type_2<arithmetic_action< multiply_action >, T, boost::units::absolute< boost::units::unit< D, S > >>
// In header: <boost/units/lambda.hpp> template<typename D, typename S, typename T> struct plain_return_type_2<arithmetic_action< multiply_action >, T, boost::units::absolute< boost::units::unit< D, S > >> { // types typedef boost::units::quantity< boost::units::absolute< boost::units::unit< D, S > >, T > type; };