| [/ |
| Copyright 2010 John Maddock. |
| 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:add_rvalue_reference add_rvalue_reference] |
| |
| template <class T> |
| struct add_rvalue_reference |
| { |
| typedef __below type; |
| }; |
| |
| __type If `T` names an object or function type then the member typedef type |
| shall name `T&&`; otherwise, type shall name `T`. ['\[Note: This rule reflects |
| the semantics of reference collapsing. For example, when a type `T` names |
| a type U&, the type `add_rvalue_reference<T>::type` is not an rvalue |
| reference. -end note\]]. |
| |
| __std_ref 20.7.6.2. |
| |
| __compat If the compiler does not support partial specialization of class-templates |
| and rvalue references |
| then this template will compile, but the member `type` will always be the same as |
| type `T`. |
| |
| __header ` #include <boost/type_traits/add_rvalue_reference.hpp>` or ` #include <boost/type_traits.hpp>` |
| |
| [table Examples |
| |
| [ [Expression] [Result Type]] |
| |
| [[`add_rvalue_reference<int>::type`][`int&&`]] |
| |
| [[`add_rvalue_reference<int const&>::type`] [`int const&`]] |
| |
| [[`add_rvalue_reference<int*>::type`] [`int*&&`]] |
| |
| [[`add_rvalue_reference<int*&>::type`] [`int*&`]] |
| |
| [[`add_rvalue_reference<int&&>::type`][`int&&`]] |
| |
| [[`add_rvalue_reference<void>::type`][`void`]] |
| |
| ] |
| |
| [endsect] |
| |