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std::pointer_traits::pointer_to

提供: cppreference.com

 
 
動的なメモリ管理
低レベルのメモリ管理
アロケータ
Original:
Allocators
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allocator
allocator_traits(C++11)
allocator_arg_t(C++11)
allocator_arg(C++11)
uses_allocator(C++11)
scoped_allocator_adaptor(C++11)
ストレージを初期化されていない
Original:
Uninitialized storage
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uninitialized_copy
uninitialized_copy_n(C++11)
uninitialized_fill
uninitialized_fill_n
raw_storage_iterator
get_temporary_buffer
return_temporary_buffer
スマートポインタ
Original:
Smart pointers
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unique_ptr(C++11)
shared_ptr(C++11)
weak_ptr(C++11)
auto_ptr(廃止予定)
owner_less(C++11)
enable_shared_from_this(C++11)
bad_weak_ptr(C++11)
default_delete(C++11)
ガベージコレクションをサポートしています
Original:
Garbage collection support
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declare_reachable(C++11)
undeclare_reachable(C++11)
declare_no_pointers(C++11)
undeclare_no_pointers(C++11)
pointer_safety(C++11)
get_pointer_safety(C++11)
その他
Original:
Miscellaneous
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pointer_traits(C++11)
addressof(C++11)
align(C++11)
Cライブラリ
Original:
C Library
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std::pointer_traits
メンバ関数
Original:
Member functions
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pointer_traits::pointer_to
 
Defined in header <memory>
static pointer pointer_traits<Ptr>::pointer_to(element_type& r );
(C + + 11以来)
static pointer pointer_traits<T*>::pointer_to(element_type& r);
(C + + 11以来)
その引数にdereferenceableポインタを構築し.
Original:
Constructs a dereferenceable pointer to its argument.
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1)
非専門std::pointer_traitsテンプレート内のこの関数のバージョンでは、単にPtr::pointer_to(r)を呼び出し、Ptrは静的メンバ関数pointer_toを提供しない場合、この関数のインスタンス化は、コンパイル時にエラーになります.
Original:
The version of this function in the non-specialized std::pointer_traits template simply calls Ptr::pointer_to(r), and if Ptr does not provide a static member function pointer_to, instantiation of this function is a compile-time error.
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2)
ポインタ型のためstd::pointer_traitsの専門化では、この関数のバージョンでは、std::addressof(r)を返します
Original:
The version of this function in the specialization of std::pointer_traits for pointer types returns std::addressof(r)
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目次

[編集] パラメータ

r -
タイプelement_type&のオブジェクトへの参照、ELEMENT_TYPEがvoidある場合を除いて、その場合にはrのタイプが指定されていません
Original:
reference to an object of type element_type&, except if element_type is void, in which case the type of r is unspecified
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[編集] 値を返します

タイプpointer_traitsのrへdereferenceableポインタ、<> ::ポインター.
Original:
A dereferenceable pointer to r, of the type pointer_traits<>::pointer.
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[編集] 例外

1)
不特定(Ptr::pointer_toとして典型的には同じ)
Original:
Unspecified (typically same as Ptr::pointer_to)
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2)
noexcept specification:  
noexcept
  (C + + 11以来)

[編集] ノート

Ptrは:: pointer_toが存在しない場合、この関数のboost library versionpointer(std::addressof(r))を返します。.
Original:
The boost library version of this function returns pointer(std::addressof(r)) if Ptr::pointer_to does not exist.
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[編集] も参照してください

(C++11)
演算子がオーバーロードされた場合でも、オブジェクトの実際のアドレスを取得します
Original:
obtains actual address of an object, even if the & operator is overloaded
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(関数テンプレート) [edit]
operator&がオーバーロードされている場合でも、オブジェクトのアドレスを取得する
Original:
obtains the address of an object, even if operator& is overloaded
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(パブリックメンバ関数of std::allocator) [edit]