1
2 // Copyright 2015, 2017 Peter Dimov.
3 //
4 // Distributed under the Boost Software License, Version 1.0.
5 //
6 // See accompanying file LICENSE_1_0.txt or copy at
7 // http://www.boost.org/LICENSE_1_0.txt
8
9
10 #include <boost/mp11/algorithm.hpp>
11 #include <boost/mp11/list.hpp>
12 #include <boost/core/lightweight_test_trait.hpp>
13 #include <type_traits>
14 #include <tuple>
15 #include <utility>
16
17 struct X1 {};
18 struct X2 {};
19 struct X3 {};
20 struct X4 {};
21
main()22 int main()
23 {
24 using boost::mp11::mp_list;
25 using boost::mp11::mp_replace_third;
26
27 {
28 using L3 = mp_list<X1, X2, X3>;
29
30 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_third<L3, void>, mp_list<X1, X2, void>>));
31
32 using L4 = mp_list<X1, X2, X3, X4>;
33
34 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_third<L4, void>, mp_list<X1, X2, void, X4>>));
35 }
36
37 {
38 using L3 = std::tuple<X1, X2, X3>;
39
40 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_third<L3, void>, std::tuple<X1, X2, void>>));
41
42 using L4 = std::tuple<X1, X2, X3, X4>;
43
44 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_third<L4, void>, std::tuple<X1, X2, void, X4>>));
45 }
46
47 return boost::report_errors();
48 }
49