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/* Protocol for GNU Objective-C objects that can write/read to a coder Copyright (C) 1993,1994 Free Software Foundation, Inc. Written by: R. Andrew McCallum <mccallum@gnu.ai.mit.edu> Date: July 1994 This file is part of the GNU Objective C Class Library. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef __Coding_h #define __Coding_h #include <objects/stdobjects.h> @class Coder; @protocol Coding - (void) encodeWithCoder: (Coder*)anEncoder; + newWithCoder: (Coder*)aDecoder; /* NOTE: This is +newWithCoder: and not -initWithCoder: because many classes keep track of their instances and only allow one instance of each configuration. For example, see the designated initializers of SocketPort, Connection, and Proxy. Making this +new.. instead of -init.. prevents us from having to waste the effort of allocating space for an object to be decoded, then immediately deallocating that space because we're just returning a pre-existing object. I also like it because it makes very clear that this method is expected to return the decoded object. This requirement would have also been present in an -init... implementation, but the requirement may not have been 100 percent clear by the method name. -mccallum */ @end #endif /* __Coding_h */
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