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std::weak_ptr::use_count

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C++
 
Utilities-Bibliothek
 
Dynamische Speicherverwaltung
Low-Level-Speicherverwaltung
Zuweiser
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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)
Initialisierter Speicher
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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
Intelligente Zeiger
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Smart pointers
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unique_ptr(C++11)
shared_ptr(C++11)
weak_ptr(C++11)
auto_ptr(veraltet)
owner_less(C++11)
enable_shared_from_this(C++11)
bad_weak_ptr(C++11)
default_delete(C++11)
Garbage Collection Unterstützung
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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)
Verschiedenes
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Miscellaneous
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pointer_traits(C++11)
addressof(C++11)
align(C++11)
C-Bibliothek
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C Library
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std::weak_ptr
Member-Funktionen
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Member functions
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weak_ptr::weak_ptr
weak_ptr::~weak_ptr
weak_ptr::operator=
Modifiers
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Modifiers
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weak_ptr::reset
weak_ptr::swap
Beobachter
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Observers
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weak_ptr::use_count
weak_ptr::expired
weak_ptr::lock
weak_ptr::owner_before
Non-Member-Funktionen
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Non-member functions
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std::swap
 
long use_count() const;
 (seit C++11)
Gibt die Anzahl der shared_ptr Instanzen Aktienbesitz des verwalteten Objekt oder ​0​, wenn das verwaltete Objekt bereits gelöscht wurde, dh *this ist leer .
Original:
Returns the number of shared_ptr instances that share ownership of the managed object, or ​0​ if the managed object has already been deleted, i.e. *this is empty.
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Inhaltsverzeichnis

[Bearbeiten] Parameter

(None)
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(none)
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[Bearbeiten] Rückgabewert

Die Zahl der shored_ptr Fällen teilen sich das Eigentum an dem verwalteten Objekt .
Original:
The number of shored_ptr instances sharing the ownership of the managed object.
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[Bearbeiten] Ausnahmen

noexcept specification:  
noexcept
  (seit C++11)

[Bearbeiten] Notes

expired() kann schneller sein als use_count() .
Original:
expired() may be faster than use_count().
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[Bearbeiten] Beispiel

This section is incomplete
Reason: no example

[Bearbeiten] Siehe auch

 prüft, ob das referenzierte Objekt bereits gelöscht wurde
(öffentliche Elementfunktion) [edit]
Von „https://de.cppreference.com/mwiki/index.php?title=cpp/memory/weak_ptr/use_count&oldid=27329“