std::weak_ptr::use_count

 

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std::weak_ptr

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weak_ptr::reset

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weak_ptr::use_count

weak_ptr::expired

weak_ptr::lock

weak_ptr::owner_before

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long use_count()const;		(dal C++11)

Restituisce il numero di istanze shared_ptr che la proprietà quota di oggetto gestito, o ​0​ se l'oggetto gestito è già stato eliminato, cioè *this è vuoto.

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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Parametri

(Nessuno)

Original:

(none)

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Valore di ritorno

Il numero di istanze shored_ptr condividere la proprietà dell'oggetto gestito.

Original:

The number of shored_ptr instances sharing the ownership of the managed object.

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Eccezioni

noexcept specification:  

noexcept

  (dal C++11)

Note

expired() può essere più veloce use_count().

Original:

expired() may be faster than use_count().

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Vedi anche

expired	Verifica se l'oggetto di riferimento è già stato cancellato Original: checks whether the referenced object was already deleted The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)