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    std::shared_ptr::unique

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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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    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)
    Non initialisée stockage
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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
    Pointeurs intelligents
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    Smart pointers
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    unique_ptr (C++11)
    shared_ptr (C++11)
    weak_ptr (C++11)
    auto_ptr (obsolète)
    owner_less (C++11)
    enable_shared_from_this (C++11)
    bad_weak_ptr (C++11)
    default_delete (C++11)
    Soutien garbage collection
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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)
    Divers
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    Miscellaneous
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    pointer_traits (C++11)
    addressof (C++11)
    align (C++11)
    Bibliothèque C
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    C Library
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    std::shared_ptr
    Les fonctions membres
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    Member functions
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    shared_ptr::shared_ptr
    shared_ptr::~shared_ptr
    shared_ptr::operator=
    Modificateurs
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    Modifiers
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    shared_ptr::reset
    shared_ptr::swap
    Des observateurs
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    Observers
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    shared_ptr::get
    shared_ptr::operator*
    shared_ptr::operator->
    shared_ptr::use_count
    shared_ptr::unique
    shared_ptr::operator bool
    shared_ptr::owner_before
    Tiers fonctions
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    Non-member functions
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    std::swap
    make_shared
    allocate_shared
    static_pointer_cast
    dynamic_pointer_cast
    const_pointer_cast
    get_deleter
    operator==
    operator|=
    operator<
    operator<=
    operator>
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    operator<<
    atomic_is_lock_free
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    atomic_store_explicit
    atomic_exchange
    atomic_exchange_explicit
    atomic_compare_exchange_weak
    atomic_compare_exchange_strong
    atomic_compare_exchange_weak_explicit
    atomic_compare_exchange_strong_explicit
    std::hash
     
    <tbody> </tbody>
    bool unique() const;
    Vérifie si l'instance est *this shared_ptr que la gestion de l'objet courant, à savoir si use_count() == 1 .
    Original:
    Checks if *this is the only shared_ptr instance managing the current object, i.e. whether use_count() == 1.
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    Paramètres

    (Aucun)
    Original:
    (none)
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    Retourne la valeur

    true si *this est l'instance shared_ptr que la gestion de l'objet courant, false autrement .
    Original:
    true if *this is the only shared_ptr instance managing the current object, false otherwise.
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    Exemple

    #include <memory> 
#include <iostream> 
  
int main() 
{ 
    std::shared_ptr<int> sp1 {std::make_shared<int>(5)};
    std::cout << "sp1.unique() == " << std::boolalpha << sp1.unique() << std::endl; 

    std::shared_ptr<int> sp2 {sp1}; 
    std::cout << "sp1.unique() == " << std::boolalpha << sp1.unique() << std::endl; 
}

    Résultat : 

    sp1.unique() == true
sp1.unique() == false

    Voir aussi
    retourne le nombre d'objets shared_ptr se référant au même objet géré
    Original:
    returns the number of shared_ptr objects referring to the same managed object
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    (fonction membre publique) [edit]