add_cv Class

2018-01-02

The latest version of this topic can be found at add_cv Class.

Makes const/volatile type from type.

Syntax

template <class Ty>  
struct add_cv;  
 
template <class T>using add_cv_t = typename add_cv<T>::type;

Parameters

Ty
The type to modify.

Remarks

An instance of the type modifier holds the modified-type add_volatile Class< add_const Class<Ty> >.

Example

#include <type_traits>   
#include <iostream>   
  
int main()   
    {   
    std::add_cv_t<int> *p = (const volatile int *)0;   
  
    p = p;  // to quiet "unused" warning   
    std::cout << "add_cv<int> == "   
        << typeid(*p).name() << std::endl;   
  
    return (0);   
    }

add_cv_t<int> == int

Requirements

Header: <type_traits>

Namespace: std

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