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Article #441Reference Semantics
From: Michael Tiemann
Date: Tue, 16 May 1989 14:24
Date: Tue, 16 May 1989 14:24
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941 bytes
While it often makes sense to talk about null pointers, since pointers are forever walking down lists, it almost never makes sense to talk about null references, since references never go anywhere. As has been pointed out here before, the "right" way to do null references is to define a null object: Foo& r = TheNullFooObject; Now you know whether `r' is the null reference or not. Note that this is like some Pascal systems, where NIL is not 0. Michael
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Path: arc1-ca.pugleaf.net!utzoo!telly!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!YAHI.STANFORD.EDU!tiemann From: tiemann@YAHI.STANFORD.EDU (Michael Tiemann) Newsgroups: gnu.g++ Subject: Reference Semantics Message-ID: <8905161424.AA27311@yahi.stanford.edu> Date: 16 May 89 14:24:53 GMT References: <323@odi.ODI.COM> Sender: daemon@tut.cis.ohio-state.edu Reply-To: tiemann@lurch.stanford.edu Distribution: gnu Organization: GNUs Not Usenet Lines: 12