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std::allocator_traits::construct

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::allocator_traits
メンバ関数
Original:
Member functions
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allocator_traits::allocate
allocator_traits::deallocate
allocator_traits::construct
allocator_traits::destroy
allocator_traits::max_size
allocator_traits::select_on_container_copy_construction
 
Defined in header <memory>
template< class T, class... Args >
static void construct( Alloc& a, T* p, Args&&... args );
(C++11およびそれ以降)
可能であれば、割り当てられた初期化されていないストレージでタイプTのオブジェクトを構築して呼び出すことで、pが指す
Original:
If possible, constructs an object of type T in allocated uninitialized storage pointed to by p, by calling
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a.construct(p, std::forward<Args>(args)...)

上記が不可能な場合(例えばaメンバ関数を持っていないconstruct())、そのような配置、新しい呼び出します
Original:
If the above is not possible (e.g. a does not have the member function construct(),), then calls placement-new as
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    ::new (static_cast<void*>(p)) T(std::forward<Args>(args)...)

目次

[編集] パラメータ

a -
建設に使用するアロケータ
Original:
allocator to use for construction
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args... -
コンストラクタの引数はa.construct()にまたはプレースメントnewに渡すことができます
Original:
the constructor arguments to pass to a.construct() or to placement-new
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[編集] 値を返します

(なし)
Original:
(none)
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[編集] ノート

挿入、コピー、移動の要素がないと、この機能は標準ライブラリコンテナによって使用され.
Original:
This function is used by the standard library containers when inserting, copying, or moving elements.
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この関数は新しい配置に戻り、自動落下を提供するためのメンバ関数は、C +construct()11以降オプショナルAllocator要件です.
Original:
Because this function provides the automatic fall back to placement new, the member function construct() is an optional Allocator requirement since C++11.
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[編集] も参照してください

割り当て関数
Original:
allocation functions
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(関数) [edit]
割り振られたストレージ内のオブジェクトを構築します
Original:
constructs an object in allocated storage
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(パブリックメンバ関数of std::allocator) [edit]