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Coding Standards
This is an older version of Boost and was released in 2015. The current version is 1.92.0.
boost::unit_test::data::monomorphic::traits
// In header: <boost/test/data/monomorphic/dataset.hpp> template<typename T> struct traits { // types typedef T const & ref_type; // public static functions template<typename Action> static void invoke_action(ref_type, Action const &); };