From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=0.6 required=5.0 tests=BAYES_00,TO_NO_BRKTS_FROM_MSSP autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,a644fa9cd1a3869a X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2001-11-28 10:54:10 PST Path: archiver1.google.com!news1.google.com!newsfeed.stanford.edu!headwall.stanford.edu!hub1.nntpserver.com!nntp-relay.ihug.net!ihug.co.nz!out.nntp.be!propagator-SanJose!in.nntp.be!newsranger.com!www.newsranger.com!not-for-mail Newsgroups: comp.lang.ada From: Ted Dennison References: <3BECA3B7.5020702@telepath.com><3BF0247D.4500975E@san.rr.com><5BXH7.22252$xS6.34813@www.newsranger.com><3BF052D3.ECEF3FF2@san.rr.com><3BF19FF8.7FE097EF@boeing.com><3BF27410.C899A16B@brighton.ac.uk><3BF3EDE5.FE0ED701@brighton.ac.uk> <700ht9.6k1.ln@127.0.0.1> <9tht9a$2j1ni$1@ID-25716.news.dfncis.de> <3piL7.34607$xS6.59455@www.newsranger.com> <9u0rkd$q9k$1@nh.pace.co.uk> <3C049C06.DF85EF80@angelfire.com> <9u2scm$lqg$1@nh.pace.co.uk> <9u38pn$r7r$1@nh.pace.co.uk> Subject: Re: List container strawman 1.2 Message-ID: <9paN7.41146$xS6.69394@www.newsranger.com> X-Abuse-Info: When contacting newsranger.com regarding abuse please X-Abuse-Info: forward the entire news article including headers or X-Abuse-Info: else we will not be able to process your request X-Complaints-To: abuse@newsranger.com NNTP-Posting-Date: Wed, 28 Nov 2001 13:53:57 EST Organization: http://www.newsranger.com Date: Wed, 28 Nov 2001 18:53:57 GMT Xref: archiver1.google.com comp.lang.ada:17125 Date: 2001-11-28T18:53:57+00:00 List-Id: In article <9u38pn$r7r$1@nh.pace.co.uk>, Marin David Condic says... > >Ummmmm.... By calling the 'Class'Input for individual components of the >thing being read? I've played with streams and got them to do what I needed If its a tagged type, how do you declare an object of the appropriate type on which to dispatch, when all you have is the saved value of its tag to go by? I don't think this routine can be implemented (sensibly) in standard Ada. Mind you, I wouldn't be adverse to someone adding the capability of creating tagged type objects from just a tag value. There are several other useful applications for that. But I don't think its there now. >what can be done or how to do it. The ARM says you can override it with your >own operation so I'm guessing there must be a use for it. :-) That's what I thought too. I brought up this issue here a couple of years ago (back when I also thought you had to override every IO attribute). I'm pretty sure the answer I got from Tucker was that it is indeed not particularly useful to be able to override 'Class'Input. --- T.E.D. homepage - http://www.telepath.com/dennison/Ted/TED.html No trees were killed in the sending of this message. However a large number of electrons were terribly inconvenienced.