From 1052074784898109403 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f78e5,fbd36da46c3cc7a0 X-Google-Attributes: gidf78e5,public From: Bill Wade Subject: Re: Discussion: type_info Date: 1999/12/06 Message-ID: <823n5t$7qg@library1.airnews.net>#1/1 X-Deja-AN: 557079786 Approved: Fergus Henderson References: <81ecdl$pq$1@nnrp1.deja.com> <81u646$kln$1@nnrp1.deja.com> X-Original-Date: Wed, 01 Dec 1999 11:21:03 -0600 X-MIMEOLE: Produced By Microsoft MimeOLE V4.72.3110.3 X-Complaints-To: news@news.unimelb.edu.au X-Trace: ariel.ucs.unimelb.edu.au 944445229 4496 128.250.37.153 (6 Dec 1999 01:53:49 GMT) Organization: Neosoft (using Airnews.net!) X-Auth: PGPMoose V1.1 PGP comp.std.c++ iQBFAgUAOEsXQuEDnX0m9pzZAQG0lAF+IFEh/KwJy9X48PnGpyn1qe+h27QhBbsA y7qqhYkj9YA7UHt7wuC71dhQKsCZcWHa =9Nj1 NNTP-Posting-Date: 6 Dec 1999 01:53:49 GMT Abuse-Reports-To: abuse at airmail.net to report improper postings Newsgroups: comp.std.c++ sirwillard@my-deja.com wrote in message <81u646$kln$1@nnrp1.deja.com>... >... hashing is a common programming technique. [ strongly implies: ] RTTI should > provide state info consistent with the implementation of hashing algorithms. Complain about that if you will, but first raise a stink about being unable to hash pointers (of any type) in either standard C or C++. Most non-trivial programs have many more objects than types. I'd be interested to hear about platforms where pointer == pointer and less(pointer,pointer) can be efficiently implemented but hash(pointer) is expensive. --- [ comp.std.c++ is moderated. To submit articles, try just posting with ] [ your news-reader. If that fails, use mailto:std-c++@ncar.ucar.edu ] [ --- Please see the FAQ before posting. --- ] [ FAQ: http://reality.sgi.com/austern_mti/std-c++/faq.html ]