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Editing: is_void.hpp
// (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000. // Use, modification and distribution are subject to the Boost Software License, // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt). // // See http://www.boost.org/libs/type_traits for most recent version including documentation. #ifndef BOOST_TT_IS_VOID_HPP_INCLUDED #define BOOST_TT_IS_VOID_HPP_INCLUDED #include <boost/type_traits/integral_constant.hpp> namespace boost { template <class T> struct is_void : public false_type {}; template<> struct is_void<void> : public true_type {}; template<> struct is_void<const void> : public true_type{}; template<> struct is_void<const volatile void> : public true_type{}; template<> struct is_void<volatile void> : public true_type{}; } // namespace boost #endif // BOOST_TT_IS_VOID_HPP_INCLUDED
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