63e88f80
 Hu Chunming
提交三方库
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// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
// (C) Copyright 2003-2007 Jonathan Turkanis
// 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.)
// See http://www.boost.org/libs/iostreams for documentation.
#ifndef BOOST_IOSTREAMS_OPERATIONS_FWD_HPP_INCLUDED
#define BOOST_IOSTREAMS_OPERATIONS_FWD_HPP_INCLUDED
#if defined(_MSC_VER)
# pragma once
#endif
#include <boost/mpl/not.hpp>
#include <boost/type_traits/is_base_and_derived.hpp>
namespace boost { namespace iostreams {
template<typename T>
struct operations;
namespace detail {
struct custom_tag { };
template<typename T>
struct is_custom
: mpl::not_<
is_base_and_derived< custom_tag, operations<T> >
>
{ };
} // End namespace detail.
template<typename T>
struct operations : detail::custom_tag { };
} } // End namespaces iostreams, boost.
#endif // #ifndef BOOST_IOSTREAMS_OPERATIONS_FWD_HPP_INCLUDED //--------------//
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