1 // Copyright Louis Dionne 2013-2017 2 // Distributed under the Boost Software License, Version 1.0. 3 // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) 4 5 #include <boost/hana/map.hpp> 6 #include <boost/hana/optional.hpp> 7 namespace hana = boost::hana; 8 9 10 auto opt = hana::just(hana::make_map()); 11 main()12int main() { } 13