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