third_party/boost/type_traits/doc/type_identity.qbk

[/ 
  Copyright 2015 Peter Dimov.
  Distributed under the Boost Software License, Version 1.0.
  (See accompanying file LICENSE_1_0.txt or copy at
  http://www.boost.org/LICENSE_1_0.txt).
]

[section:type_identity type_identity]

   template <class T>
   struct type_identity
   {
      typedef T type;
   };

   template <class T> using type_identity_t = typename type_identity<T>::type; // C++11 and above
  
__header ` #include <boost/type_traits/type_identity.hpp>` or ` #include <boost/type_traits.hpp>`

[table Examples

[ [Expression] [Result Type]]

[[`type_identity<int>::type`][`int`]]

[[`type_identity<int&>::type`] [`int&`]]

[[`type_identity<int* const&>::type`] [`int* const&`]]

]

[endsect]