?? void.h
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//// Void.h//// $Id: //poco/1.2/Foundation/include/Poco/Void.h#1 $//// Library: Foundation// Package: Core// Module: Void//// Definition of the Void class.//// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.// All rights reserved.//// Redistribution and use in source and binary forms, with or without// modification, are permitted provided that the following conditions// are met://// 1. Redistributions of source code must retain the above copyright// notice, this list of conditions and the following disclaimer.//// 2. Redistributions in binary form must reproduce the above copyright// notice, this list of conditions and the following disclaimer in the// documentation and/or other materials provided with the distribution.//// 3. Redistributions in any form must be accompanied by information on// how to obtain complete source code for this software and any// accompanying software that uses this software. The source code// must either be included in the distribution or be available for no// more than the cost of distribution plus a nominal fee, and must be// freely redistributable under reasonable conditions. For an// executable file, complete source code means the source code for all// modules it contains. It does not include source code for modules or// files that typically accompany the major components of the operating// system on which the executable file runs.//// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE// POSSIBILITY OF SUCH DAMAGE.//#ifndef Foundation_Void_INCLUDED#define Foundation_Void_INCLUDED#include "Poco/Foundation.h"namespace Poco {class Foundation_API Void /// A dummy class with value-type semantics, /// mostly useful as a template argument. /// /// This class is typically used together with ActiveMethod, /// if no argument or return value is needed.{public: Void(); /// Creates the Void. Void(const Void& v); /// Creates the Void from another Void. /// /// The philosophical aspects of this operation /// remain undiscussed for now. ~Void(); /// Destroys the Void. Void& operator = (const Void& v); /// Assigns another void.};} // namespace Poco#endif // Foundation_Void_INCLUDED
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