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std::shared_ptr::unique

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< cpp‎ | memory‎ | shared ptr

 
 
 
La gestion dynamique de la mémoire
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Smart pointers
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unique_ptr (C++11)
shared_ptr (C++11)
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std::shared_ptr
Les fonctions membres
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shared_ptr::shared_ptr
shared_ptr::~shared_ptr
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shared_ptr::get
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shared_ptr::use_count
shared_ptr::unique
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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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Sommaire

[modifier] Paramètres

(Aucun)
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(none)
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[modifier] 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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[modifier] 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

[modifier] 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]