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std::weak_ptr::operator=

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< cpp‎ | memory‎ | weak ptr

 
 
ユーティリティライブラリ
支援を入力します (basic types, RTTI, type traits)
動的なメモリ管理
エラー処理
プログラムユーティリティ
可変個引数関数
日付と時刻
関数オブジェクト
initializer_list(C++11)
bitset
hash(C++11)
関係演算子
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Relational operators
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rel_ops::operator!=
rel_ops::operator>
rel_ops::operator<=
rel_ops::operator>=
ペアとタプル
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Pairs and tuples
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pair
tuple(C++11)
piecewise_construct_t(C++11)
piecewise_construct(C++11)
フォワード、スワップ、および移動
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Swap, forward and move
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swap
forward(C++11)
move(C++11)
move_if_noexcept(C++11)
declval(C++11)
 
動的なメモリ管理
低レベルのメモリ管理
アロケータ
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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
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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
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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
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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
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Miscellaneous
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pointer_traits(C++11)
addressof(C++11)
align(C++11)
Cライブラリ
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C Library
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std::weak_ptr
メンバ関数
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Member functions
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weak_ptr::weak_ptr
weak_ptr::~weak_ptr
weak_ptr::operator=
修飾子
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Modifiers
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weak_ptr::reset
weak_ptr::swap
オブザーバー
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Observers
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weak_ptr::use_count
weak_ptr::expired
weak_ptr::lock
weak_ptr::owner_before
非メンバ関数
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Non-member functions
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std::swap
 
weak_ptr& operator=( const weak_ptr& r );
(1) (C + + 11以来)
template< class Y >
weak_ptr& operator=( const weak_ptr<Y>& r );
(2) (C + + 11以来)
template< class Y >
weak_ptr& operator=( const shared_ptr<Y>& r );
(3) (C + + 11以来)
rによって管理されている管理対象オブジェクトを置き換えます。オブジェクトがrと共有されています。 rに糸目を管理しない場合には、*thisもないオブジェクトを管理していません。 weak_ptr<T>(r).swap(*this)に相当.
Original:
Replaces the managed object with the one managed by r. The object is shared with r. If r manages no object, *this manages no object too. Equivalent to weak_ptr<T>(r).swap(*this).
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目次

[編集] パラメータ

r -
スマートポインタでオブジェクトを共有する
Original:
smart pointer to share an object with
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[編集] 値を返します

*this

[編集] 例外

noexcept specification:  
noexcept
  (C + + 11以来)

[編集] ノート

実装は一時weak_ptrオブジェクトを作成せずに要件を満たすことができ.
Original:
The implementation may meet the requirements without creating a temporary weak_ptr object.
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