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55 lines
1.2 KiB
C++
55 lines
1.2 KiB
C++
#ifndef BOOST_REF_HPP_INCLUDED
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#define BOOST_REF_HPP_INCLUDED
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#if _MSC_VER+0 >= 1020
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#pragma once
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#endif
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//
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// ref.hpp - ref/cref, useful helper functions
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//
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// Copyright (C) 1999, 2000 Jaakko Järvi (jaakko.jarvi@cs.utu.fi)
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// Copyright (C) 2001 Peter Dimov
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//
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// Permission to copy, use, modify, sell and distribute this software
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// is granted provided this copyright notice appears in all copies.
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// This software is provided "as is" without express or implied
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// warranty, and with no claim as to its suitability for any purpose.
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//
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// See http://www.boost.org/libs/bind/ref.html for documentation.
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//
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namespace boost
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{
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template<class T> class reference_wrapper
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{
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public:
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explicit reference_wrapper(T & t): t_(t) {}
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operator T & () const { return t_; }
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T & get() const { return t_; }
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private:
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T & t_;
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reference_wrapper & operator= (reference_wrapper const &);
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};
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template<class T> inline reference_wrapper<T> ref(T & t)
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{
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return reference_wrapper<T>(t);
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}
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template<class T> inline reference_wrapper<T const> cref(T const & t)
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{
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return reference_wrapper<T const>(t);
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}
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} // namespace boost
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#endif // #ifndef BOOST_REF_HPP_INCLUDED
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