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/assert.hpp> 6 #include <boost/hana/equal.hpp> 7 #include <boost/hana/optional.hpp> 8 #include <boost/hana/type.hpp> 9 10 #include <string> 11 namespace hana = boost::hana; 12 13 main()14int main() { 15 static_assert(hana::just('x').value() == 'x', ""); 16 BOOST_HANA_CONSTANT_CHECK(*hana::just(hana::type_c<int>) == hana::type_c<int>); 17 BOOST_HANA_RUNTIME_CHECK(hana::just(std::string{"abcd"})->size() == 4); 18 19 // hana::nothing.value(); // compile-time error 20 } 21