std::unique_ptr::operator=
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| unique_ptr& operator=( unique_ptr&& r ); |
(1) | (depuis C++11) |
| template< class U, class E > unique_ptr& operator=( unique_ptr<U,E>&& r ); |
(1) | (depuis C++11) |
| unique_ptr& operator=( nullptr_t ); |
(2) | (depuis C++11) |
Transfère la propriété de l'objet pointé par
2) r à *this comme si en appelant reset(r.release()) suivie d'une cession de std::forward<E>(r.get_deleter()). Original:
Transfers ownership of the object pointed to by
r to *this as if by calling reset(r.release()) followed by an assignment from std::forward<E>(r.get_deleter()). The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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Effectivement la même que l'appel reset() .
Original:
Effectively the same as calling reset().
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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Notez que l'opérateur d'affectation de
unique_ptr n'accepte que XValues, qui est typiquement généré par std::move. (La classe unique_ptr explicitement supprime son constructeur copie et l'opérateur d'affectation lvalue lvalue.)Original:
Note that
unique_ptr's assignment operator only accepts XValues, which are typically generated by std::move. (The unique_ptr class explicitly deletes its lvalue copy constructor and lvalue assignment operator.)The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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Sommaire |
[modifier] Paramètres
| r | - | pointeur intelligent dont la propriété sera transférée
Original: smart pointer from which ownership will be transfered The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
[modifier] Retourne la valeur
*this
[modifier] Exceptions
[modifier] Exemple
#include <iostream> #include <memory> struct Foo { Foo() { std::cout << "Foo\n"; } ~Foo() { std::cout << "~Foo\n"; } }; int main() { std::unique_ptr<Foo> p1; { std::cout << "Creating new Foo...\n"; std::unique_ptr<Foo> p2(new Foo); p1 = std::move(p2); std::cout << "About to leave inner block...\n"; // Foo instance will continue to live, // despite p2 going out of scope } std::cout << "About to leave program...\n"; }
Résultat :
Creating new Foo... Foo About to leave inner block... About to leave program... ~Foo
