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1 | // Copyright David Abrahams 2003. |
2 | // Distributed under the Boost Software License, Version 1.0. (See | |
3 | // accompanying file LICENSE_1_0.txt or copy at | |
4 | // http://www.boost.org/LICENSE_1_0.txt) | |
5 | #ifndef IMPLICIT_CAST_DWA200356_HPP | |
6 | # define IMPLICIT_CAST_DWA200356_HPP | |
7 | ||
8 | namespace boost { | |
9 | ||
10 | namespace detail { | |
11 | ||
12 | template<class T> struct icast_identity | |
13 | { | |
14 | typedef T type; | |
15 | }; | |
16 | ||
17 | } // namespace detail | |
18 | ||
19 | // implementation originally suggested by C. Green in | |
20 | // http://lists.boost.org/MailArchives/boost/msg00886.php | |
21 | ||
22 | // The use of identity creates a non-deduced form, so that the | |
23 | // explicit template argument must be supplied | |
24 | template <typename T> | |
25 | inline T implicit_cast (typename boost::detail::icast_identity<T>::type x) { | |
26 | return x; | |
27 | } | |
28 | ||
29 | // incomplete return type now is here | |
30 | //template <typename T> | |
31 | //void implicit_cast (...); | |
32 | ||
33 | } // namespace boost | |
34 | ||
35 | ||
36 | #endif // IMPLICIT_CAST_DWA200356_HPP |