ceph/src/boost/libs/hana/test/tuple/empty_member.cpp

   1 // Copyright Louis Dionne 2013-2016
   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/tuple.hpp>
   6 namespace hana = boost::hana;
   7
   8
   9 struct A { };
  10 struct B { };
  11
  12 int main() {
  13     {
  14         using T = hana::tuple<int, A>;
  15         static_assert((sizeof(T) == sizeof(int)), "");
  16     }
  17     {
  18         using T = hana::tuple<A, int>;
  19         static_assert((sizeof(T) == sizeof(int)), "");
  20     }
  21     {
  22         using T = hana::tuple<A, int, B>;
  23         static_assert((sizeof(T) == sizeof(int)), "");
  24     }
  25     {
  26         using T = hana::tuple<A, B, int>;
  27         static_assert((sizeof(T) == sizeof(int)), "");
  28     }
  29     {
  30         using T = hana::tuple<int, A, B>;
  31         static_assert((sizeof(T) == sizeof(int)), "");
  32     }
  33 }