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// (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_ADD_REFERENCE_HPP_INCLUDED
#define BOOST_TT_ADD_REFERENCE_HPP_INCLUDED
#include <boost/detail/workaround.hpp>
#include <boost/config.hpp>
namespace boost {
namespace detail {
//
// We can't filter out rvalue_references at the same level as
// references or we get ambiguities from msvc:
//
template <typename T>
struct add_reference_impl
{
typedef T& type;
};
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
template <typename T>
struct add_reference_impl<T&&>
{
typedef T&& type;
};
#endif
} // namespace detail
template <class T> struct add_reference
{
typedef typename boost::detail::add_reference_impl<T>::type type;
};
template <class T> struct add_reference<T&>
{
typedef T& type;
};
// these full specialisations are always required:
template <> struct add_reference<void> { typedef void type; };
#ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
template <> struct add_reference<const void> { typedef const void type; };
template <> struct add_reference<const volatile void> { typedef const volatile void type; };
template <> struct add_reference<volatile void> { typedef volatile void type; };
#endif
} // namespace boost
#endif // BOOST_TT_ADD_REFERENCE_HPP_INCLUDED
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16 entries across 16 versions & 1 rubygems