From 1381603740828056591 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f78e5,d6b00896947ca26f X-Google-Attributes: gidf78e5,public X-Google-Thread: fc772,d6b00896947ca26f X-Google-Attributes: gidfc772,public From: bparker@gil.com.au (Brian Parker) Subject: Re: matrix based on Date: 1997/05/16 Message-ID: #1/1 X-Deja-AN: 241821980 References: <5lc577$57i@netlab.cs.rpi.edu> X-Original-Date: Fri, 16 May 1997 03:50:43 GMT X-Approved: Herb Sutter comp.lang.c++.moderated Organization: Global Info-Links News Server X-Auth: PGPMoose V1.1 PGP comp.std.c++ iQBFAgUBM3vcF+EDnX0m9pzZAQFAiQF/ZmKIqSa3QmhNJeZohHKs34/nKGPAbnSa gFcFjLFhoF3H0sj4ab6f+D95wG94P0yd =J1N8 Newsgroups: comp.lang.c++.moderated,comp.std.c++ Originator: fjh@mundook.cs.mu.OZ.AU Ralf Stoffels wrote: >The draft standard says: >"the valarray template is neither a matrix class nor a field class. > However, it is a very useful building block for designing such >classes." >Does anyone knows a matrix class, which is based on ? >Ralf >--- That is the $64,000 question. Valarray has certainly been around long enough to prove its worth, at least experimentally. I haven't found it to be a useful building block for matrix classes, but hopefully there are examples of its successful use. If not, then I think the committee should seriously consider removing it from the standard, until more experience with it is obtained. If it is a part of the final standard and is found to be less than useful in practice then it will be difficult to remove it at a later standard revision, IMO. ,Brian Parker (bparker@gil.com.au) [ Send an empty e-mail to c++-help@netlab.cs.rpi.edu for info ] [ about comp.lang.c++.moderated. First time posters: do this! ] --- [ 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 ] [ FAQ: http://reality.sgi.com/employees/austern_mti/std-c++/faq.html ] [ Policy: http://reality.sgi.com/employees/austern_mti/std-c++/policy.html ] [ Comments? mailto:std-c++-request@ncar.ucar.edu ]