std::add_cv, std::add_const, std::add_volatile – cppreference.com

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definiert in Header `<type_traits>`

`template< class T > struct add_cv;`	(1)	(seit C++11)

`template< class T > struct add_const;`	(2)	(seit C++11)

`template< class T > struct add_volatile;`	(3)	(seit C++11)

Provides the member typedef type which is the same as T, except it has a cv-qualifier added (unless T is a function, a reference, or already has this cv-qualifier)

1) adds both const and volatile

2) adds const

3) adds volatile

Mitglied Typen


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

`type`	the type `T` with the cv-qualifier

Mögliche Implementierung

template< class T >
struct add_cv {
    typedef typename std::add_volatile<typename std::add_const<T>::type>::type type;
};

template< class T> struct add_const { typedef const T type; };

template< class T> struct add_volatile { typedef volatile T type; };

Beispiel

Siehe auch


is_const (C++11)	prüft, ob ein Typ const qualifizierten Original: checks if a type is const-qualified The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Klassen-Template) [edit]

is_volatile (C++11)	prüft, ob ein Typ flüchtigen qualifiziert Original: checks if a type is volatile-qualified The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Klassen-Template) [edit]

remove_cv remove_const remove_volatile (C++11) (C++11) (C++11)	Entfernt `const` und / oder `volatile` Planer aus dem angegebenen Typ Original: removes `const` or/and `volatile` specifiers from the given type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Klassen-Template) [edit]