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/erase_key.hpp> 8 #include <boost/hana/integral_constant.hpp> 9 #include <boost/hana/set.hpp> 10 #include <boost/hana/type.hpp> 11 namespace hana = boost::hana; 12 13 main()14int main() { 15 constexpr auto xs = hana::make_set(hana::int_c<0>, hana::type_c<int>, hana::type_c<void>); 16 17 BOOST_HANA_CONSTANT_CHECK(hana::erase_key(xs, hana::type_c<int>) == hana::make_set(hana::int_c<0>, hana::type_c<void>)); 18 BOOST_HANA_CONSTANT_CHECK(hana::erase_key(xs, hana::type_c<char>) == xs); 19 } 20