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std::unique_ptr::swap

Da cppreference.com.
< cpp‎ | memory‎ | unique ptr

 
 
Utilità libreria
Tipo di supporto (basic types, RTTI, type traits)
Gestione della memoria dinamica
La gestione degli errori
Programma di utilità
Funzioni variadic
Data e ora
Funzione oggetti
initializer_list(C++11)
bitset
hash(C++11)
Gli operatori relazionali
Original:
Relational operators
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rel_ops::operator!=
rel_ops::operator>
rel_ops::operator<=
rel_ops::operator>=
Coppie e tuple
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Pairs and tuples
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pair
tuple(C++11)
piecewise_construct_t(C++11)
piecewise_construct(C++11)
Swap, in avanti e spostare
Original:
Swap, forward and move
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swap
forward(C++11)
move(C++11)
move_if_noexcept(C++11)
declval(C++11)
 
Gestione della memoria dinamica
Basso livello di gestione della memoria
Allocatori
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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 inizializzata stoccaggio
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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
Puntatori intelligenti
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Smart pointers
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unique_ptr(C++11)
shared_ptr(C++11)
weak_ptr(C++11)
auto_ptr(deprecato)
owner_less(C++11)
enable_shared_from_this(C++11)
bad_weak_ptr(C++11)
default_delete(C++11)
Garbage collection supporto
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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)
Varie
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Miscellaneous
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pointer_traits(C++11)
addressof(C++11)
align(C++11)
C Library
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C Library
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std :: unique_ptr
Membri funzioni
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Member functions
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unique_ptr::unique_ptr
unique_ptr::~unique_ptr
unique_ptr::operator=
Modificatori
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Modifiers
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unique_ptr::release
unique_ptr::reset
unique_ptr::swap
Osservatori
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Observers
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unique_ptr::get
unique_ptr::get_deleter
unique_ptr::operator bool
unique_ptr::operator*
unique_ptr::operator->
unique_ptr::operator[]
Non membri funzioni
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Non-member functions
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operator==
operator!=
operator<
operator>
operator<=
operator>
operator>=
std::swap
std::hash
 
void swap(unique_ptr& other);
(dal C++11)
Swap gli oggetti gestiti e deleters associati con un altro oggetto unique_ptr other.
Original:
Swaps the managed objects and associated deleters with another unique_ptr object other.
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Indice

[modifica] Parametri

other -
un altro oggetto unique_ptr di scambiare l'oggetto gestito e il deleter con
Original:
another unique_ptr object to swap the managed object and the deleter with
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[modifica] Valore di ritorno

(Nessuno)
Original:
(none)
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[modifica] Eccezioni

noexcept specification:  
noexcept
  (dal C++11)

[modifica] Esempio

#include <iostream>
#include <memory>
 
struct Foo {
    Foo(int _val) : val(_val) { std::cout << "Foo...\n"; }
    ~Foo() { std::cout << "~Foo...\n"; }
    int val;
};
 
int main()
{
    std::unique_ptr<Foo> up1(new Foo(1));
    std::unique_ptr<Foo> up2(new Foo(2));
 
    up1.swap(up2);
 
    std::cout << "up1->val:" << up1->val << std::endl;
    std::cout << "up2->val:" << up2->val << std::endl;
}

Output:

Foo...
Foo...
up1->val:2
up2->val:1
~Foo...
~Foo...