ceph/src/boost/libs/hana/include/boost/hana/detail/void_t.hpp

   1 /*!
   2 @file
   3 Defines an equivalent to the proposed `std::void_t`.
   4
   5 @copyright Louis Dionne 2013-2016
   6 Distributed under the Boost Software License, Version 1.0.
   7 (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
   8  */
   9
  10 #ifndef BOOST_HANA_DETAIL_VOID_T_HPP
  11 #define BOOST_HANA_DETAIL_VOID_T_HPP
  12
  13 #include <boost/hana/config.hpp>
  14
  15
  16 BOOST_HANA_NAMESPACE_BEGIN namespace detail {
  17     template <typename ...>
  18     using void_t = void;
  19 } BOOST_HANA_NAMESPACE_END
  20
  21 #endif // !BOOST_HANA_DETAIL_VOID_T_HPP