Makes non const/volatile type from type.
template<class T>
    struct remove_cv;
template<class T>
  using remove_cv_t = typename remove_cv<T>::type;
Parameters
- T
The type to modify. 
Remarks
An instance of remove_cv<T> holds a modified-type that is T1 when T is of the form const T1, volatile T1, or const volatile T1, otherwise T.
Example
 
#include <type_traits> 
#include <iostream> 
 
int main() 
    { 
    int *p = (std::remove_cv_t<const volatile int> *)0; 
 
    p = p;  // to quiet "unused" warning 
    std::cout << "remove_cv_t<const volatile int> == " 
        << typeid(*p).name() << std::endl; 
 
    return (0); 
    } 
 
remove_cv_t<const volatile int> == int
Requirements
Header: <type_traits>
Namespace: std