add_volatile Class
The latest version of this topic can be found at add_volatile Class.
Makes volatile type from the specified type.
Syntax
template <class Ty>
struct add_volatile;
template <class T>using add_volatile_t = typename add_volatile<T>::type;
Parameters
Ty
The type to modify.
Remarks
An instance of the type modifier holds a modified-type that is Ty if Ty is a reference, a function, or a volatile-qualified type, otherwise volatile Ty.
Example
#include <type_traits>
#include <iostream>
int main()
{
std::add_volatile_t<int> *p = (volatile int *)0;
p = p; // to quiet "unused" warning
std::cout << "add_volatile<int> == "
<< typeid(*p).name() << std::endl;
return (0);
}
add_volatile<int> == int
Requirements
Header: <type_traits>
Namespace: std