Boost C++ Libraries

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add_volatile

template <class T>
struct add_volatile
{
   typedef see-below type;
};

template <class T> using add_volatile_t = typename add_volatile<T>::type; // C++11 and above

type: The same type as T volatile for all T.

C++ Standard Reference: 3.9.3.

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

Table 1.16. Examples

Expression

Result Type

add_volatile<int>::type

int volatile

add_volatile<int&>::type

int&

add_volatile<int*>::type

int* volatile

add_volatile<int const>::type

int const volatile


Compiler Compatibility: All current compilers are supported by this trait.


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