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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)
5 #include <boost/hana/assert.hpp>
6 #include <boost/hana/contains.hpp>
7 #include <boost/hana/integral_constant.hpp>
8 #include <boost/hana/keys.hpp>
9 #include <boost/hana/map.hpp>
10 #include <boost/hana/pair.hpp>
11 #include <boost/hana/permutations.hpp>
12 #include <boost/hana/tuple.hpp>
13 #include <boost/hana/type.hpp>
16 namespace hana
= boost::hana
;
17 using namespace std::literals
;
21 auto m
= hana::make_map(
22 hana::make_pair(hana::int_c
<1>, "foobar"s
),
23 hana::make_pair(hana::type_c
<void>, 1234)
26 // The order of the keys is unspecified.
27 BOOST_HANA_CONSTANT_CHECK(
28 hana::keys(m
) ^hana::in
^ hana::permutations(hana::make_tuple(hana::int_c
<1>, hana::type_c
<void>))