...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::nfp::has_param<named_parameter_combine< NP, Rest >, Keyword>
// In header: <boost/test/utils/named_params.hpp> template<typename NP, typename Rest, typename Keyword> struct has_param<named_parameter_combine< NP, Rest >, Keyword> : public mpl::or_< is_same< NP::id, Keyword::id >::type, has_param< Rest, Keyword >::type > { };