37 lines
919 B
C++
37 lines
919 B
C++
|
// Copyright David Abrahams 2003.
|
||
|
|
// Distributed under 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)
|
||
|
|
#ifndef IMPLICIT_CAST_DWA200356_HPP
|
||
|
|
# define IMPLICIT_CAST_DWA200356_HPP
|
||
|
|
|
||
|
|
namespace boost {
|
||
|
|
|
||
|
|
namespace detail {
|
||
|
|
|
||
|
|
template<class T> struct icast_identity
|
||
|
|
{
|
||
|
|
typedef T type;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace detail
|
||
|
|
|
||
|
|
// implementation originally suggested by C. Green in
|
||
|
|
// http://lists.boost.org/MailArchives/boost/msg00886.php
|
||
|
|
|
||
|
|
// The use of identity creates a non-deduced form, so that the
|
||
|
|
// explicit template argument must be supplied
|
||
|
|
template <typename T>
|
||
|
|
inline T implicit_cast (typename boost::detail::icast_identity<T>::type x) {
|
||
|
|
return x;
|
||
|
|
}
|
||
|
|
|
||
|
|
// incomplete return type now is here
|
||
|
|
//template <typename T>
|
||
|
|
//void implicit_cast (...);
|
||
|
|
|
||
|
|
} // namespace boost
|
||
|
|
|
||
|
|
|
||
|
|
#endif // IMPLICIT_CAST_DWA200356_HPP
|