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std::is_compound

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< cpp‎ | types

 
 
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Objetos Function
initializer_list(C++11)
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Operadores relacionales
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Relational operators
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rel_ops::operator!=
rel_ops::operator>
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rel_ops::operator>=
Pares y tuplas
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Pairs and tuples
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pair
tuple(C++11)
piecewise_construct_t(C++11)
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Cambiar, hacia adelante y mover
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Swap, forward and move
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swap
forward(C++11)
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Tipos básicos
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Basic types
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Tipos fundamentales
Tipos fijos ancho enteros (C++11)
Límites numéricos
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Numeric limits
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Caracteres de tipo
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Categorías primarias de tipo
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is_void(C++11)
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is_object(C++11)
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is_compound(C++11)
is_integral(C++11)
is_floating_point(C++11)
is_fundamental(C++11)
is_arithmetic(C++11)
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is_lvalue_reference(C++11)
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is_member_pointer(C++11)
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Propiedades de tipo
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Type properties
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is_const(C++11)
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Operaciones compatibles
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Supported operations
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is_constructible
is_trivially_constructible
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(C++11)
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(C++11)
(C++11)
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(C++11)
(C++11)
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(C++11)
(C++11)
is_assignable
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is_copy_assignable
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is_move_assignable
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is_destructible
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(C++11)
(C++11)
(C++11)
has_virtual_destructor(C++11)
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Relationships and property queries
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is_same(C++11)
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alignment_of(C++11)
rank(C++11)
extent(C++11)
Modificaciones de tipo
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(C++11)
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make_signed(C++11)
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Transformaciones de tipo
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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)
Escriba constantes rasgos
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Type trait constants
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integral_constant(C++11)
 
Defined in header <type_traits>
template< class T >
struct is_compound;
(desde C++11)
Si T es un tipo compuesto (es decir, matriz, función, objeto puntero, puntero de función, el puntero del objeto miembro, puntero a función miembro, de referencia, de clase, unión o enumeración, incluidas las variantes cv-calificados), establece en el miembro constante value true iguales. Para cualquier otro tipo, es value false .
Original:
If T is a compound type (that is, array, function, object pointer, function pointer, member object pointer, member function pointer, reference, class, union, or enumeration, including any cv-qualified variants), provides the member constant value equal true. For any other type, value is false.
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Contenido

Inherited from std::integral_constant

Member constants

value
[estático]
true si T is a compound type , false lo contrario
Original:
true if T is a compound type , false otherwise
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(público miembro constante estática)

Member functions

operator bool
convierte el objeto a bool, devuelve value
Original:
converts the object to bool, returns value
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(miembro público función)

Member types

Tipo
Original:
Type
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Definition
value_type bool
type std::integral_constant<bool, value>

[editar] Notas

Tipos de compuestos son los tipos que son construidos de tipos fundamentales. Cualquier tipo C + + o es fundamental o compuesto .
Original:
Compound types are the types that are constructed from fundamental types. Any C++ type is either fundamental or compound.
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[editar] Posible implementación

template< class T >
struct is_compound : std::integral_constant<bool, !std::is_fundamental<T>::value> {};

[editar] Ejemplo

#include <iostream>
#include <type_traits>
 
int main() {
    class cls {};
    std::cout << (std::is_compound<cls>::value
                     ? "T is compound"
                     : "T is not a compound") << '\n';
    std::cout << (std::is_compound<int>::value
                     ? "T is compound"
                     : "T is not a compound") << '\n';
}

Output:

T is compound
T is not a compound

[editar] Ver también

Comprueba si un tipo es el tipo fundamental
Original:
checks if a type is fundamental type
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(clase de plantilla) [edit]
(C++11)
Comprueba si un tipo es de tipo escalar
Original:
checks if a type is scalar type
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(clase de plantilla) [edit]
(C++11)
Comprueba si un tipo es tipo de objeto
Original:
checks if a type is object type
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(clase de plantilla) [edit]
(C++11)
Comprueba si un tipo es un tipo de matriz
Original:
checks if a type is an array type
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(clase de plantilla) [edit]