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/transform.hpp> 8 #include <boost/hana/tuple.hpp> 9 #include <boost/hana/type.hpp> 10 namespace hana = boost::hana; 11 12 13 template <typename ...> 14 struct F { struct type; }; 15 16 struct x1; 17 struct x2; 18 struct x3; 19 struct x4; 20 main()21 int main() { 22 // transform with tuple_t and a metafunction 23 BOOST_HANA_CONSTANT_CHECK(hana::equal( 24 hana::transform(hana::tuple_t<>, hana::metafunction<F>), 25 hana::tuple_t<> 26 )); 27 28 BOOST_HANA_CONSTANT_CHECK(hana::equal( 29 hana::transform(hana::tuple_t<x1>, hana::metafunction<F>), 30 hana::tuple_t<F<x1>::type> 31 )); 32 33 BOOST_HANA_CONSTANT_CHECK(hana::equal( 34 hana::transform(hana::tuple_t<x1, x2>, hana::metafunction<F>), 35 hana::tuple_t<F<x1>::type, F<x2>::type> 36 )); 37 38 BOOST_HANA_CONSTANT_CHECK(hana::equal( 39 hana::transform(hana::tuple_t<x1, x2, x3>, hana::metafunction<F>), 40 hana::tuple_t<F<x1>::type, F<x2>::type, F<x3>::type> 41 )); 42 43 BOOST_HANA_CONSTANT_CHECK(hana::equal( 44 hana::transform(hana::tuple_t<x1, x2, x3, x4>, hana::metafunction<F>), 45 hana::tuple_t<F<x1>::type, F<x2>::type, F<x3>::type, F<x4>::type> 46 )); 47 48 BOOST_HANA_CONSTANT_CHECK(hana::equal( 49 hana::transform(hana::tuple_t<x1, x2, x3, x4>, hana::template_<F>), 50 hana::tuple_t<F<x1>, F<x2>, F<x3>, F<x4>> 51 )); 52 } 53