add_lvalue_reference.hpp

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//  Copyright 2010 John Maddock
 
//  Distributed under the Boost Software License, Version 1.0.
//  See http://www.boost.org/LICENSE_1_0.txt
 
#ifndef BOOST_TYPE_TRAITS_EXT_ADD_LVALUE_REFERENCE__HPP
#define BOOST_TYPE_TRAITS_EXT_ADD_LVALUE_REFERENCE__HPP
 
#include <boost/type_traits/add_reference.hpp>
 
namespace boost{
 
template <class T> struct add_lvalue_reference
{
   typedef typename boost::add_reference<T>::type type; 
};
 
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
template <class T> struct add_lvalue_reference<T&&>
{
   typedef T& type;
};
#endif
 
#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
 
   template <class T> using add_lvalue_reference_t = typename add_lvalue_reference<T>::type;
 
#endif
 
}
 
#endif  // BOOST_TYPE_TRAITS_EXT_ADD_LVALUE_REFERENCE__HPP