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/integral_constant.hpp> 8 #include <boost/hana/optional.hpp> 9 #include <boost/hana/size.hpp> 10 #include <boost/hana/tuple.hpp> 11 namespace hana = boost::hana; 12 13 main()14int main() { 15 BOOST_HANA_CONSTANT_CHECK(hana::size(hana::make_tuple()) == hana::size_c<0>); 16 BOOST_HANA_CONSTANT_CHECK(hana::size(hana::make_tuple(1, '2', 3.0)) == hana::size_c<3>); 17 18 BOOST_HANA_CONSTANT_CHECK(hana::size(hana::nothing) == hana::size_c<0>); 19 BOOST_HANA_CONSTANT_CHECK(hana::size(hana::just('x')) == hana::size_c<1>); 20 } 21