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- // Copyright Daniel Wallin, David Abrahams 2010. 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)
- #ifndef BOOST_PARAMETER_IS_MAYBE_050329_HPP
- #define BOOST_PARAMETER_IS_MAYBE_050329_HPP
- #include <boost/type_traits/is_base_and_derived.hpp>
- namespace boost {
- namespace parameter {
- namespace aux {
- struct maybe_base {};
- template <class T>
- struct is_maybe
- : is_base_and_derived<maybe_base, T>
- {};
- } // namespace aux
- } // namespace parameter
- } // namespace boost
- #endif // BOOST_PARAMETER_IS_MAYBE_050329_HPP
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