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=-0.3 required=5.0 tests=BAYES_00, REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,7936408ed8296efa X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2001-04-16 09:26:05 PST Path: supernews.google.com!sn-xit-03!supernews.com!news-feed.riddles.org.uk!arclight.uoregon.edu!logbridge.uoregon.edu!titan03.ksc.nasa.gov!niven.ksc.nasa.gov!usenet From: "Samuel T. Harris" Newsgroups: comp.lang.ada Subject: Re: User define attributes Date: Mon, 16 Apr 2001 11:19:54 -0500 Organization: Raytheon Aerospace Engineering Services Message-ID: <3ADB1BAA.6F4E0437@gsde.hou.us.ray.com> References: <9b9g7c$cp6$1@taliesin.netcom.net.uk> <3ada9cf5$1@pull.gecm.com> <9behk1$ik9$1@taliesin.netcom.net.uk> <3adad7ab$1@pull.gecm.com> <3ADB033A.F10344A9@gsde.hou.us.ray.com> <3adb0ba1$1@pull.gecm.com> Reply-To: samuel_t_harris@raytheon.com NNTP-Posting-Host: sstf-fw.jsc.nasa.gov MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 4.7 [en] (X11; U; IRIX64 6.2 IP19) X-Accept-Language: en Xref: supernews.google.com comp.lang.ada:6919 Date: 2001-04-16T11:19:54-05:00 List-Id: Martin Dowie wrote: > > been there; done that; got the compiler listing... :-) > > I suspect there are many companies out there with very > similar generics. > > I suppose we have to ask the question - if it is that > easy (and relative to the actual application, it > usually is!) then why isn't 'Image for composite types > part of the language?.. > I believe I asked that very same question here some years ago. The response I got was the difficulty in defining such a thing within the language and the difficulties in implementing it in general. To which I countered that the very same issues are relevant to the definition and implementation of streams. That is as far as the thread went (as far as my imperfect memory recalls). -- Samuel T. Harris, Principal Engineer Raytheon, Aerospace Engineering Services "If you can make it, We can fake it!"