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/contains.hpp> 7 #include <boost/hana/core/is_a.hpp> 8 #include <boost/hana/equal.hpp> 9 #include <boost/hana/find_if.hpp> 10 #include <boost/hana/optional.hpp> 11 #include <boost/hana/tuple.hpp> 12 13 #include <string> 14 namespace hana = boost::hana; 15 using namespace std::string_literals; 16 17 main()18int main() { 19 BOOST_HANA_RUNTIME_CHECK( 20 hana::find_if(hana::make_tuple(1, '2', 3.3, "abc"s), hana::is_a<std::string>) == hana::just("abc"s) 21 ); 22 23 BOOST_HANA_RUNTIME_CHECK( 24 "abc"s ^hana::in^ hana::make_tuple(1, '2', 3.3, "abc"s) 25 ); 26 } 27