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- // Boost.TypeErasure library
- //
- // Copyright 2012 Steven Watanabe
- //
- // Distributed under 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)
- //
- // $Id$
- #ifndef BOOST_TYPE_ERASURE_IS_EMPTY_HPP_INCLUDED
- #define BOOST_TYPE_ERASURE_IS_EMPTY_HPP_INCLUDED
- #include <boost/type_erasure/detail/access.hpp>
- namespace boost {
- namespace type_erasure {
- /** Returns true for an empty @ref any. */
- template<class T>
- bool is_empty(const T& arg) {
- return ::boost::type_erasure::detail::access::data(arg).data == 0;
- }
- }
- }
- #endif
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