Imported Upstream version 1.64.0
[platform/upstream/boost.git] / libs / hana / example / ext / boost / fusion / deque.cpp
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/ext/boost/fusion/deque.hpp>
8 #include <boost/hana/integral_constant.hpp>
9 #include <boost/hana/transform.hpp>
10
11 #include <boost/fusion/include/deque.hpp>
12 #include <boost/fusion/include/make_deque.hpp>
13
14 #include <string>
15 namespace fusion = boost::fusion;
16 namespace hana = boost::hana;
17
18
19 struct Fish { std::string name; };
20 struct Cat  { std::string name; };
21 struct Dog  { std::string name; };
22
23 int main() {
24     fusion::deque<Fish, Cat, Dog> animals{{"Nemo"}, {"Garfield"}, {"Snoopy"}};
25     hana::front(animals).name = "Moby Dick";
26
27     auto names = hana::transform(animals, [](auto a) {
28       return a.name;
29     });
30
31     BOOST_HANA_RUNTIME_CHECK(hana::equal(
32         names,
33         fusion::make_deque("Moby Dick", "Garfield", "Snoopy")
34     ));
35 }