1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
// 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
|