std::pointer_traits::pointer_to

 

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std::pointer_traits

Membri funzioni Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

pointer_traits::pointer_to

 

Elemento definito nell'header <memory>
static pointer pointer_traits<Ptr>::pointer_to(element_type& r );		(dal C++11)

static pointer pointer_traits<T*>::pointer_to(element_type& r);		(dal C++11)

Costruisce un puntatore dereferenceable la sua tesi.

Original:

Constructs a dereferenceable pointer to its argument.

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1)

La versione di questa funzione nel non specializzato modello std::pointer_traits chiama semplicemente Ptr::pointer_to(r), e se Ptr non fornisce una funzione di membro static pointer_to, istanze di questa funzione è un errore di compilazione.

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.

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2)

La versione di questa funzione nella specializzazione di std::pointer_traits per i tipi di puntatore restituisce 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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Parametri

r

-

riferimento a un oggetto di element_type& tipo, a meno che ELEMENT_TYPE è void, nel qual caso il tipo di r non è specificato 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.

Valore di ritorno

Un puntatore a dereferenceable r, del pointer_traits tipo <> :: puntatore.

Original:

A dereferenceable pointer to r, of the type pointer_traits<>::pointer.

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Eccezioni

1)

Non specificato (in genere come Ptr::pointer_to)

Original:

Unspecified (typically same as Ptr::pointer_to)

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2)

noexcept specification:  

noexcept

  (dal C++11)

Note

Il boost library version di questa funzione restituisce pointer(std::addressof(r)) se Ptr :: pointer_to non esiste.

Original:

The boost library version of this function returns pointer(std::addressof(r)) if Ptr::pointer_to does not exist.

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Vedi anche

addressof (C++11)	ottiene l'indirizzo reale di un oggetto, anche se l'operatore &' è sovraccarico 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. (funzione di modello)
address	ottiene l'indirizzo di un oggetto, anche se operator& è sovraccarico 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. (metodo pubblico)