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std::shared_ptr::unique

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< cpp‎ | memory‎ | shared ptr

 
 
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Operadores relacionales
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Relational operators
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Pairs and tuples
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Cambiar, hacia adelante y mover
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Swap, forward and move
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Gestión de memoria dinámica
Bajo la gestión de memoria de nivel
Los asignadores
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Allocators
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Uninitialized storage
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Smart pointers
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Garbage soporte colección
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Garbage collection support
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C Library
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C Library
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std::shared_ptr
Las funciones miembro
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Modificadores
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Modifiers
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Los observadores
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Observers
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shared_ptr::unique
Terceros funciones
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Non-member functions
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bool unique() const;
Comprueba si *this es la instancia shared_ptr sólo la gestión del objeto actual, es decir, 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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Contenido

[editar] Parámetros

(Ninguno)
Original:
(none)
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[editar] Valor de retorno

true si *this es la instancia shared_ptr sólo la gestión del objeto actual, false de otra manera .
Original:
true if *this is the only shared_ptr instance managing the current object, false otherwise.
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[editar] Ejemplo

#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; 
}

Salida:

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

[editar] Ver también

devuelve el número de objetos que se refieren a la shared_ptr objeto gestionado mismo
Original:
returns the number of shared_ptr objects referring to the same managed object
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(función miembro público) [editar]