| // 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 |
