std::is_object
From cppreference.com
Defined in header
<type_traits>
|
||
template< class T >
struct is_object; |
(since C++11) | |
If T
is an object type (that is, scalar, array, class, or union), provides the member constant value
equal true. For any other type, value
is false.
Contents |
Inherited from std::integral_constant
Member constants
value
[static]
|
true if T is an object type , false otherwise (public static member constant) |
Member functions
operator bool |
converts the object to bool, returns value (public member function) |
operator()
(C++14)
|
returns value (public member function) |
Member types
Type | Definition |
value_type
|
bool
|
type
|
std::integral_constant<bool, value> |
[edit] Possible implementation
template< class T> struct is_object : std::integral_constant<bool, std::is_scalar<T>::value || std::is_array<T>::value || std::is_union<T>::value || std::is_class<T>::value> {}; |
[edit] Example
Run this code
Output:
true false true false
[edit] See also
(C++11)
|
checks if a type is scalar type (class template) |
(C++11)
|
checks if a type is an array type (class template) |
(C++11)
|
checks if a type is an union type (class template) |
(C++11)
|
checks if a type is a class type (but not union type) (class template) |
(library fundamentals TS)
|
variable template alias of std::is_object::value (variable template) |