通过

add_volatile Class

  • 项目

Makes volatile type from the specified type.

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

See Also

Reference

<type_traits>

remove_volatile Class