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std::add_cv, std::add_const, std::add_volatile

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C++
 
Utilities-Bibliothek
 
Geben Sie Unterstützung
Grundtypen
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Basic types
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Grundtypen
Feste Breite Integer-Typen (C++11)
Numerische Grenzen
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Numeric limits
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numeric_limits
C numerische begrenzt Schnittstelle
Laufzeit-Typinformationen
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Runtime type information
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Exterieur
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Type traits
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Primären Typ Kategorien
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Primary type categories
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is_void(C++11)
is_array(C++11)
is_pointer(C++11)
is_enum(C++11)
is_union(C++11)
is_class(C++11)
is_function(C++11)
is_object(C++11)
is_scalar(C++11)
is_compound(C++11)
is_integral(C++11)
is_floating_point(C++11)
is_fundamental(C++11)
is_arithmetic(C++11)
is_reference(C++11)
is_lvalue_reference(C++11)
is_rvalue_reference(C++11)
is_member_pointer(C++11)
is_member_object_pointer(C++11)
is_member_function_pointer(C++11)
Typ Eigenschaften
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Type properties
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is_const(C++11)
is_volatile(C++11)
is_pod(C++11)
is_empty(C++11)
is_polymorphic(C++11)
is_abstract(C++11)
Unterstützte Operationen
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Supported operations
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is_constructible
is_trivially_constructible
is_nothrow_constructible		(C++11)
(C++11)
(C++11)
is_default_constructible
is_trivially_default_constructible
is_nothrow_default_constructible		(C++11)
(C++11)
(C++11)
is_copy_constructible
is_trivially_copy_constructible
is_nothrow_copy_constructible		(C++11)
(C++11)
(C++11)
is_move_constructible
is_trivially_move_constructible
is_nothrow_move_constructible		(C++11)
(C++11)
(C++11)
is_assignable
is_trivially_assignable
is_nothrow_assignable		(C++11)
(C++11)
(C++11)
is_copy_assignable
is_trivially_copy_assignable
is_nothrow_copy_assignable		(C++11)
(C++11)
(C++11)
is_move_assignable
is_trivially_move_assignable
is_nothrow_move_assignable		(C++11)
(C++11)
(C++11)
is_destructible
is_trivially_destructible
is_nothrow_destructible		(C++11)
(C++11)
(C++11)
has_virtual_destructor(C++11)
Beziehungen und Eigentum Abfragen
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Relationships and property queries
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is_same(C++11)
is_base_of(C++11)
is_convertible(C++11)
alignment_of(C++11)
rank(C++11)
extent(C++11)
Typ Modifikationen
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Type modifications
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remove_cv
remove_const
remove_volatile		(C++11)
(C++11)
(C++11)
add_cv
add_const
add_volatile		(C++11)
(C++11)
(C++11)
make_signed(C++11)
make_unsigned(C++11)
Typ Transformationen
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Type transformations
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aligned_storage(C++11)
aligned_union(C++11)
decay(C++11)
enable_if(C++11)
conditional(C++11)
common_type(C++11)
underlying_type(C++11)
result_of(C++11)
Typ-Trait-Konstanten
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Type trait constants
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integral_constant(C++11)
 
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

Inhaltsverzeichnis

[Bearbeiten] Mitglied Typen

Name
Original:
Name
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 Definition
type the type T with the cv-qualifier

[Bearbeiten] 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; };

[Bearbeiten] Beispiel

This section is incomplete
Reason: no example

[Bearbeiten] Siehe auch

(C++11)
prüft, ob ein Typ const qualifizierten
Original:
checks if a type is const-qualified
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(Klassen-Template) [edit]
(C++11)
prüft, ob ein Typ flüchtigen qualifiziert
Original:
checks if a type is volatile-qualified
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(Klassen-Template) [edit]
(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
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(Klassen-Template) [edit]
Von „https://de.cppreference.com/mwiki/index.php?title=cpp/types/add_cv&oldid=30126“