1 // Copyright Jason Rice 2015 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/experimental/printable.hpp> 7 #include <boost/hana/integral_constant.hpp> 8 #include <boost/hana/optional.hpp> 9 10 #include <sstream> 11 namespace hana = boost::hana; 12 13 main()14int main() { 15 { 16 std::ostringstream ss; 17 ss << hana::experimental::print( 18 hana::just(hana::int_c<5>) 19 ); 20 BOOST_HANA_RUNTIME_CHECK(ss.str() == "just(5)"); 21 } 22 { 23 std::ostringstream ss; 24 ss << hana::experimental::print( 25 hana::nothing 26 ); 27 BOOST_HANA_RUNTIME_CHECK(ss.str() == "nothing"); 28 } 29 } 30