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std::unique_ptr::release

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< cpp‎ | memory‎ | unique ptr

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C++
 
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(C++11)
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Os operadores relacionais
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rel_ops::operator!=
rel_ops::operator>
rel_ops::operator<=
rel_ops::operator>=
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Pairs and tuples
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Gerenciamento de memória dinâmica
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std :: unique_ptr
Funções de membro
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Member functions
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unique_ptr::unique_ptr
unique_ptr::~unique_ptr
unique_ptr::operator=
Modificadores
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unique_ptr::release
unique_ptr::reset
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unique_ptr::get
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unique_ptr::operator bool
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Não-membros funções
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pointer release();
 (desde C++11)
Libera a propriedade do objeto gerenciado se houver. get() retornos nullptr após a chamada.
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Releases the ownership of the managed object if any. get() returns nullptr after the call.
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Índice

[editar] Parâmetros

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

Ponteiro para o objeto gerenciado ou nullptr se não houvesse objeto gerenciado, ou seja, o valor que seria devolvido por get() antes da chamada.
Original:
Pointer to the managed object or nullptr if there was no managed object, i.e. the value which would be returned by get() before the call.
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[editar] Exceções

noexcept specification:  
noexcept
  (desde C++11)

[editar] Exemplo

#include <memory>
#include <iostream>
 
struct Foo {
    Foo() { std::cout << "Foo\n"; }
    ~Foo() { std::cout << "~Foo\n"; }
};
 
int main()
{
    std::cout << "Creating new Foo...\n";
    std::unique_ptr<Foo> up(new Foo());
 
    std::cout << "About to release Foo...\n";
    Foo* fp = up.release();
 
    if (up.get() == nullptr)
        std::cout << "Foo is no longer owned by unique_ptr...\n";
 
    delete fp;
}

Saída: 

Creating new Foo...
Foo
About to release Foo...
Foo is no longer owned by unique_ptr...
~Foo

[editar] Veja também
retorna um ponteiro para o objeto gerenciado
Original:
returns a pointer to the managed object
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(função pública membro) [edit]
substitui o objeto gerenciado
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replaces the managed object
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(função pública membro) [edit]
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