[ceph.git] / ceph / src / boost / libs / type_traits / doc / add_pointer.qbk

[/ 
  Copyright 2007 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_pointer add_pointer]

   template <class T>
   struct add_pointer
   {
      typedef __below type;
   };
  
__type The same type as `remove_reference<T>::type*`.  

The rationale for this template
is that it produces the same type as `decltype(&t)`, 
where `t` is an object of type `T`.

__std_ref 8.3.1.

__header ` #include <boost/type_traits/add_pointer.hpp>` or ` #include <boost/type_traits.hpp>`

[table Examples

[ [Expression] [Result Type]]

[[`add_pointer<int>::type`][`int*`]]

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

[[`add_pointer<int*>::type`] [`int**`]]

[[`add_pointer<int*&>::type`] [`int**`]]

]

[all_compilers]

[endsect]
Commit	Line	Data
7c673cae FG	1	[/
	2	Copyright 2007 John Maddock.
	3	Distributed under the Boost Software License, Version 1.0.
	4	(See accompanying file LICENSE_1_0.txt or copy at
	5	http://www.boost.org/LICENSE_1_0.txt).
	6	]
	7
	8	[section:add_pointer add_pointer]
	9
	10	template <class T>
	11	struct add_pointer
	12	{
	13	typedef __below type;
	14	};
	15
	16	__type The same type as `remove_reference<T>::type*`.
	17
	18	The rationale for this template
	19	is that it produces the same type as `decltype(&t)`,
	20	where `t` is an object of type `T`.
	21
	22	__std_ref 8.3.1.
	23
	24	__header ` #include <boost/type_traits/add_pointer.hpp>` or ` #include <boost/type_traits.hpp>`
	25
	26	[table Examples
	27
	28	[ [Expression] [Result Type]]
	29
	30	[[`add_pointer<int>::type`][`int*`]]
	31
	32	[[`add_pointer<int const&>::type`] [`int const*`]]
	33
	34	[[`add_pointer<int>::type`] [`int*`]]
	35
	36	[[`add_pointer<int&>::type`] [`int*`]]
	37
	38	]
	39
	40	[all_compilers]
	41
	42	[endsect]
	43