| Home | Libraries | People | FAQ | More

### 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 1.25. 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.