copy_cv_ref

template<class T, class U>
struct copy_cv_ref
{
    typedef see-below type;
};

template<class T, class U>
using copy_cv_ref_t = typename copy_cv_ref<T, U>::type;

type: T cvref, where cvref are the cvref-qualifiers of U.

Header: #include <boost/type_traits/copy_cv_ref.hpp> or #include <boost/type_traits.hpp>>

Table 1.18. Examples

Expression	Result Type
`copy_cv_ref<int, const char>::type`	`const int`
`copy_cv_ref<int, volatile char>::type`	`volatile int`
`copy_cv_ref<int, const volatile char>::type`	`const volatile int`
`copy_cv_ref<int, char&>::type`	`int&`
`copy_cv_ref<int, const char&>::type`	`const int&`
`copy_cv_ref<int, volatile char&>::type`	`volatile int&`
`copy_cv_ref<int, const volatile char&>::type`	`const volatile int&`
`copy_cv_ref<int, char&&>::type`	`int&&`
`copy_cv_ref<int, const char&&>::type`	`const int&&`
`copy_cv_ref<int, volatile char&&>::type`	`volatile int&&`
`copy_cv_ref<int, const volatile char&&>::type`	`const volatile int&&`
`copy_cv_ref<int&&, char&>::type`	`int&`
`copy_cv_ref<int&, const char>::type`	`int&`
`copy_cv_ref<int&, volatile char&>::type`	`int&`
`copy_cv_ref<int&, const volatile char&&>::type`	`int&`

Compiler Compatibility: All current compilers are supported by this trait. The type alias copy_cv_ref_t is only available if the compiler supports template aliases.

Boost C++ Libraries

copy_cv_ref