3rdparty/boost/boost/type_traits/type_identity.hpp

   1 #ifndef BOOST_TYPE_TRAITS_TYPE_IDENTITY_HPP_INCLUDED
   2 #define BOOST_TYPE_TRAITS_TYPE_IDENTITY_HPP_INCLUDED
   3
   4 //
   5 //  Copyright 2015 Peter Dimov
   6 //
   7 //  Distributed under the Boost Software License, Version 1.0.
   8 //  See accompanying file LICENSE_1_0.txt or copy at
   9 //  http://www.boost.org/LICENSE_1_0.txt
  10 //
  11
  12 #include <boost/config.hpp>
  13
  14 namespace boost
  15 {
  16
  17 template<class T> struct type_identity
  18 {
  19     typedef T type;
  20 };
  21
  22 #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
  23
  24 template <class T> using type_identity_t = typename type_identity<T>::type;
  25
  26 #endif
  27
  28
  29 } // namespace boost
  30
  31 #endif // #ifndef BOOST_TYPE_TRAITS_TYPE_IDENTITY_HPP_INCLUDED