// // cpp03/can_query_unsupported.cpp // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // // Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com) // // Distributed under the Boost Software License, Version 1.0. (See accompanying // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) // #include #include struct prop { }; struct object { }; namespace boost { namespace asio { template <> struct is_applicable_property { static const bool value = true; }; } // namespace asio } // namespace boost int main() { assert((!boost::asio::can_query::value)); assert((!boost::asio::can_query::value)); }