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    std::weak_ptr::lock

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    <metanoindex/>

     
    C++
     
    Bibliothèque d'utilitaires
     
    La gestion dynamique de la mémoire
    Faible niveau de gestion de la mémoire
    Répartiteurs
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    allocator
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    Non initialisée stockage
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    Uninitialized storage
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    uninitialized_copy
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    std::weak_ptr
    Les fonctions membres
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    weak_ptr::weak_ptr
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    weak_ptr::use_count
    weak_ptr::expired
    weak_ptr::lock
    weak_ptr::owner_before
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    Non-member functions
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    std::swap
     
    <tbody> </tbody>
    std::shared_ptr<T> lock() const
    		 (depuis C++11)
    Crée un nouveau shared_ptr qui partage la propriété de l'objet géré. S'il n'y a pas d'objet géré, c'est à dire *this est vide, alors le shared_ptr retournée est aussi vide .
    Original:
    Creates a new shared_ptr that shares ownership of the managed object. If there is no managed object, i.e. *this is empty, then the returned shared_ptr also is empty.
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    Retourne effectivement expired() ? shared_ptr<T>() : shared_ptr<T>(*this) .
    Original:
    Effectively returns expired() ? shared_ptr<T>() : shared_ptr<T>(*this).
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    Paramètres

    (Aucun)
    Original:
    (none)
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    Retourne la valeur

    Un shared_ptr qui partage la propriété de l'objet possédé .
    Original:
    A shared_ptr which shares ownership of the owned object.
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    Exceptions

    noexcept specification:  
    <tbody> </tbody>
    noexcept
       (depuis C++11)

    Notes

    Tant cette fonction et le constructeur de shared_ptr peuvent être utilisés pour acquérir la propriété temporaire de l'objet géré. La différence est que le constructeur de std::shared_ptr<T> lève une exception si l'argument est vide std::weak_ptr, tandis que std::weak_ptr<T>::lock() construit une std::shared_ptr<T> vide .
    Original:
    Both this function and the constructor of shared_ptr may be used to acquire temporary ownership of the managed object. The difference is that the constructor of std::shared_ptr<T> throws an exception when the std::weak_ptr argument is empty, while std::weak_ptr<T>::lock() constructs an empty std::shared_ptr<T>.
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    Exemple

    This section is incomplete
    Reason: no example

    Voir aussi
    vérifie si l'objet référencé a déjà été supprimé
    Original:
    checks whether the referenced object was already deleted
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    (fonction membre publique) [edit]