std::is_pod
From cppreference.com
Defined in header
<type_traits>
|
||
template< class T >
struct is_pod; |
(since C++11) | |
If T
is a PODType
("plain old data type"), that is, both trivial and standard-layout, 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 a POD 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] Notes
Objects of POD types are fully compatible with the C programming language.
[edit] Example
Run this code
#include <iostream> #include <type_traits> struct A { int m; }; struct B { int m1; private: int m2; }; struct C { virtual void foo(); }; int main() { std::cout << std::boolalpha; std::cout << std::is_pod<A>::value << '\n'; std::cout << std::is_pod<B>::value << '\n'; std::cout << std::is_pod<C>::value << '\n'; }
Output:
true false false
[edit] See also
(C++11)
|
checks if a type is standard-layout type (class template) |
(C++11)
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checks if a type is trivial (class template) |
(library fundamentals TS)
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variable template alias of std::is_pod::value (variable template) |