...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 — has_param<Params,Keyword>::value is true if Params has parameter corresponding to the Keyword
// In header: <boost/test/utils/named_params.hpp> template<typename NP, typename Keyword> struct has_param : public is_same< NP::id, Keyword::id > { };