none.hpp

//
// (c) Copyright 2014 DESY, Eugen Wintersberger <eugen.wintersberger@desy.de>
//
// This file is part of libpnicore.
//
// libpnicore is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// libpnicore is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with libpnicore.  If not, see <http://www.gnu.org/licenses/>.
// 
// ============================================================================
//
// Created on: Nov 4, 2014
//     Author: Eugen Wintersberger <eugen.wintersberger@desy.de>
//
#pragma once

#include <iostream>

namespace pni{
namespace core{

    struct none {};

    //------------------------------------------------------------------------
    std::ostream &operator<<(std::ostream &stream,const none &n);

    //------------------------------------------------------------------------
    std::istream &operator>>(std::istream &stream,none &n);

    //------------------------------------------------------------------------
    bool operator==(const none &a,const none &b);

    //------------------------------------------------------------------------
    bool operator!=(const none &a,const none &b);

//end of namespace
}
}