33 lines
1016 B
C++
33 lines
1016 B
C++
// (C) Copyright John Maddock 2005.
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// Use, modification and distribution are subject to the
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// Boost Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifdef TEST_STD_HEADERS
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#include <functional>
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#else
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#include <boost/tr1/functional.hpp>
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#endif
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#include <boost/static_assert.hpp>
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#include <boost/type_traits/is_convertible.hpp>
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#include <boost/type_traits/is_same.hpp>
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int main()
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{
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typedef std::tr1::reference_wrapper<int> rr_type;
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typedef std::tr1::reference_wrapper<const int> crr_type;
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int i, j;
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rr_type r1 = std::tr1::ref(i);
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crr_type r2 = std::tr1::cref(i);
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r1 = std::tr1::ref(j);
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int& ref = r1.get();
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BOOST_STATIC_ASSERT((::boost::is_convertible<rr_type, int&>::value));
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BOOST_STATIC_ASSERT((::boost::is_convertible<crr_type, const int&>::value));
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BOOST_STATIC_ASSERT((::boost::is_same<rr_type::type, int>::value));
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BOOST_STATIC_ASSERT((::boost::is_same<crr_type::type, const int>::value));
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}
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