std::pointer_traits::pointer_to
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| Definido no cabeçalho <memory>
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| static pointer pointer_traits<Ptr>::pointer_to(element_type& r ); |
(desde C++11) | |
| static pointer pointer_traits<T*>::pointer_to(element_type& r); |
(desde C++11) | |
Constrói um ponteiro dereferenceable ao seu argumento.
Original:
Constructs a dereferenceable pointer to its argument.
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1)
A versão desta função no modelo std::pointer_traits não especializado simplesmente chama Ptr::pointer_to(r), e se Ptr não fornece uma função de membro estático
pointer_to instanciação, desta função é um erro de tempo de compilação.Original:
The version of this function in the non-specialized std::pointer_traits template simply calls Ptr::pointer_to(r), and if Ptr does not provide a static member function
pointer_to, instantiation of this function is a compile-time error.The text has been machine-translated via Google Translate.
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2)
A versão desta função na especialização de std::pointer_traits para tipos de ponteiro retorna std::addressof(r)
Original:
The version of this function in the specialization of std::pointer_traits for pointer types returns std::addressof(r)
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Índice |
[editar] Parâmetros
| r | - | referência a um objecto de tipo element_type&, excepto se for ELEMENT_TYPE void, caso em que o tipo de
r não é especificado Original: reference to an object of type element_type&, except if element_type is void, in which case the type of r is unspecified The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
[editar] Valor de retorno
Um ponteiro dereferenceable para
r, do pointer_traits tipo <> :: ponteiro.Original:
A dereferenceable pointer to
r, of the type pointer_traits<>::pointer.The text has been machine-translated via Google Translate.
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[editar] Exceções
1)Não especificado (tipicamente igual Ptr::pointer_to)
2)
Original:
Unspecified (typically same as Ptr::pointer_to)
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[editar] Notas
O boost library version desta função retorna pointer(std::addressof(r)) se Ptr :: pointer_to não existe.
Original:
The boost library version of this function returns pointer(std::addressof(r)) if Ptr::pointer_to does not exist.
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[editar] Veja também
| (C++11) |
obtém o endereço real de um objeto, mesmo se o operador &' está sobrecarregado Original: obtains actual address of an object, even if the & operator is overloaded The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (modelo de função) |
| obtém o endereço de um objeto, mesmo se operator& está sobrecarregado Original: obtains the address of an object, even if operator& is overloaded The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (of std::allocator função pública membro)
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