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git.proxmox.com Git - ceph.git/blob - ceph/src/boost/libs/hana/test/experimental/view/joined/is_empty.cpp
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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/experimental/view.hpp>
7 #include <boost/hana/is_empty.hpp>
8 #include <boost/hana/not.hpp>
10 #include <support/seq.hpp>
11 namespace hana
= boost::hana
;
14 template <int> struct undefined
{ };
17 auto container
= ::seq
;
20 auto storage1
= container();
21 auto storage2
= container();
22 auto joined
= hana::experimental::joined(storage1
, storage2
);
23 BOOST_HANA_CONSTANT_CHECK(hana::is_empty(joined
));
26 auto storage1
= container(undefined
<0>{});
27 auto storage2
= container();
28 auto joined
= hana::experimental::joined(storage1
, storage2
);
29 BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(joined
)));
32 auto storage1
= container(undefined
<0>{});
33 auto storage2
= container(undefined
<1>{});
34 auto joined
= hana::experimental::joined(storage1
, storage2
);
35 BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(joined
)));
38 auto storage1
= container();
39 auto storage2
= container(undefined
<0>{});
40 auto joined
= hana::experimental::joined(storage1
, storage2
);
41 BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(joined
)));