// Copyright Frank Mori Hess 2009 | |
// | |
// Use, modification and | |
// distribution is 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) | |
// For more information, see http://www.boost.org | |
#ifndef BOOST_SIGNALS2_DETAIL_VARIADIC_ARG_TYPE_HPP | |
#define BOOST_SIGNALS2_DETAIL_VARIADIC_ARG_TYPE_HPP | |
#include <functional> | |
namespace boost | |
{ | |
namespace signals2 | |
{ | |
namespace detail | |
{ | |
template<unsigned, typename ... Args> class variadic_arg_type; | |
template<typename T, typename ... Args> class variadic_arg_type<0, T, Args...> | |
{ | |
public: | |
typedef T type; | |
}; | |
template<unsigned n, typename T, typename ... Args> class variadic_arg_type<n, T, Args...> | |
{ | |
public: | |
typedef typename variadic_arg_type<n - 1, Args...>::type type; | |
}; | |
template <typename R, typename ... Args> | |
struct std_functional_base | |
{}; | |
template <typename R, typename T1> | |
struct std_functional_base<R, T1>: public std::unary_function<T1, R> | |
{}; | |
template <typename R, typename T1, typename T2> | |
struct std_functional_base<R, T1, T2>: public std::binary_function<T1, T2, R> | |
{}; | |
} // namespace detail | |
} // namespace signals2 | |
} // namespace boost | |
#endif // BOOST_SIGNALS2_DETAIL_VARIADIC_ARG_TYPE_HPP |