make_void

template<class...>
struct make_void
{
    typedef void type;
};

template<class... Ts>
using void_t = typename make_void<Ts...>::type;

type: The type void for all T.

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

Table 1.27. Examples

Expression	Result Type
`make_void<int>::type`	`void`
`make_void<int&>::type`	`void`
`make_void<int(*)(int)>::type`	`void`
`make_void<int[]>::type`	`void`
`make_void<int[1]>::type`	`void`
`make_void<>::type`	`void`
`make_void<int, int>::type`	`void`

Compiler Compatibility: All current compilers are supported by this trait. However, the type alias void_t is only available if the compiler supports template aliases. Further, in the absence of variadic-template support, make_void only supports up to 5 parameters.

Boost C++ Libraries

make_void