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- // Boost.Range library
- //
- // Copyright Robin Eckert 2015. Use, modification and distribution is
- // 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)
- //
- //
- // For more information, see http://www.boost.org/libs/range/
- //
- //[ref_unwrapped_example
- #include <boost/range/adaptor/ref_unwrapped.hpp>
- #include <iostream>
- #include <vector>
- struct example
- {
- int value;
- };
- int main(int argc, const char* argv[])
- {
- //<-
- #if !defined(BOOST_NO_CXX11_DECLTYPE) \
- && !defined(BOOST_NO_CXX11_RANGE_BASED_FOR) \
- && !defined(BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX) \
- && !defined(BOOST_NO_CXX11_AUTO_DECLARATIONS)
- //->
- using boost::adaptors::ref_unwrapped;
- example one{1};
- example two{2};
- example three{3};
- std::vector<std::reference_wrapper<example> > input{one, two, three};
- for (auto&& entry : input | ref_unwrapped)
- {
- std::cout << entry.value;
- }
- return 0;
- //<-
- #endif
- //->
- }
- //]
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