0b6a182c
 Hu Chunming
添加无鉴权注册和注销
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//-----------------------------------------------------------------------------
// boost variant/bad_visit.hpp header file
// See http://www.boost.org for updates, documentation, and revision history.
//-----------------------------------------------------------------------------
//
// Copyright (c) 2002-2003
// Eric Friedman
//
// 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)
#ifndef BOOST_VARIANT_BAD_VISIT_HPP
#define BOOST_VARIANT_BAD_VISIT_HPP
#include <boost/config.hpp>
#include <exception>
namespace boost {
//////////////////////////////////////////////////////////////////////////
// class bad_visit
//
// Exception thrown when a visitation attempt via apply_visitor fails due
// to invalid visited subtype or contents.
//
struct BOOST_SYMBOL_VISIBLE bad_visit
: std::exception
{
public: // std::exception interface
const char * what() const BOOST_NOEXCEPT_OR_NOTHROW BOOST_OVERRIDE
{
return "boost::bad_visit: "
"failed visitation using boost::apply_visitor";
}
};
} // namespace boost
#endif // BOOST_VARIANT_BAD_VISIT_HPP
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