From: Wes Groleau <wesgroleau@despammed.com>
Subject: Re: Why is Ada NOT a good choice for a beginner to programming?
Date: Fri, 10 Jan 2003 08:29:33 -0500
Date: 2003-01-10T08:29:33-05:00 [thread overview]
Message-ID: <fVzT9.2391$c6.2527@bos-service2.ext.raytheon.com> (raw)
In-Reply-To: avk4l9$19i$1@a1-hrz.uni-duisburg.de
> One complaint he had was that it be possible to define a Length
> using derived types and still have "*" return values of type Length,
> when it should return an area. He had a point, hadn't he?
Sure. I didn't say he's always wrong.
Just that after reading his resounding
condemnation of features I _know_ are
valuable, it will never work to quote
Dijkstra to me on a topic I don't know about.
> OTOH, with only structural equivalence of types, and no way to derive
> both an integral length type and an integral area type, that are really
> diferent, how can you build areas into your types, such that the compiler
> will prevent use of values of the wrong type?
This has been solved in at least three different
ways in Ada in discussions on this very news group.
None of the solutions are 100% satisfactory.
However, none of them are really bad, either.
next prev parent reply other threads:[~2003-01-10 13:29 UTC|newest]
Thread overview: 119+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-21 3:30 Why is Ada NOT a good choice for a beginner to programming? David Wright
2002-12-21 5:44 ` sk
2002-12-23 14:29 ` Wes Groleau
2002-12-23 17:36 ` sk
2002-12-23 18:24 ` David Wright
2002-12-23 19:16 ` sk
2002-12-23 19:48 ` David Wright
2002-12-23 21:33 ` Wes Groleau
2002-12-23 21:17 ` Robert A Duff
2002-12-24 19:22 ` faust
2002-12-24 0:46 ` Robert A Duff
2002-12-24 9:41 ` Pascal Obry
2002-12-25 4:43 ` faust
2002-12-27 17:54 ` Warren W. Gay VE3WWG
2003-01-02 13:50 ` Wes Groleau
2002-12-25 7:24 ` AG
2003-01-02 9:56 ` John McCabe
2003-01-02 13:47 ` Wes Groleau
2003-01-08 19:39 ` faust
2003-01-08 2:44 ` Jeffrey Creem
2003-01-08 18:54 ` Wes Groleau
2003-01-08 19:48 ` chris.danx
2003-01-08 21:59 ` Wes Groleau
2003-01-09 15:31 ` Georg Bauhaus
2003-01-10 3:26 ` Hyman Rosen
2003-01-10 22:58 ` Georg Bauhaus
2003-01-10 3:51 ` Kevin Cline
2003-01-10 13:29 ` Wes Groleau [this message]
2003-01-11 12:09 ` Richard Riehle
2003-01-11 18:13 ` Wes Groleau
2003-01-09 16:52 ` faust
2003-01-08 21:57 ` Vinzent Hoefler
2003-01-09 0:59 ` faust
2003-01-09 0:59 ` faust
2003-01-08 13:14 ` Ted Dennison
2003-01-08 17:41 ` Warren W. Gay VE3WWG
2003-01-09 16:40 ` faust
2003-01-08 21:58 ` Vinzent Hoefler
2002-12-23 21:30 ` Wes Groleau
2002-12-23 22:11 ` David Wright
2002-12-30 16:22 ` Mark
2002-12-24 0:50 ` Craig Carey
2002-12-29 14:44 ` Colin Paul Gloster
2002-12-21 8:39 ` arvids lemchens
2002-12-21 8:53 ` Gautier
2002-12-21 9:42 ` Craig Carey
2002-12-21 10:44 ` Dale Stanbrough
2002-12-21 15:47 ` Alfred Hilscher
2002-12-21 19:01 ` tmoran
2002-12-22 1:06 ` Robert C. Leif
2002-12-23 14:56 ` Wes Groleau
2002-12-23 11:05 ` Alfred Hilscher
2002-12-22 0:34 ` James S. Rogers
2002-12-23 11:11 ` Alfred Hilscher
2002-12-23 14:32 ` Wes Groleau
2002-12-23 19:54 ` tmoran
2002-12-21 10:51 ` Why is Ada a good choice for an ambitious beginner to programming Wojtek Narczynski
2002-12-22 14:40 ` Bill Findlay
2002-12-22 15:08 ` Bill Findlay
2002-12-22 23:02 ` David Wright
2002-12-23 1:36 ` Bill Findlay
2002-12-23 2:13 ` David Wright
2002-12-23 14:40 ` Wes Groleau
2002-12-27 21:25 ` Randy Brukardt
2002-12-23 11:52 ` Wojtek Narczynski
2002-12-23 14:12 ` Bill Findlay
2002-12-23 20:15 ` Wojtek Narczynski
2002-12-24 19:29 ` Bill Findlay
2002-12-24 22:56 ` Wojtek Narczynski
2002-12-24 23:31 ` Bill Findlay
2002-12-24 23:36 ` Adrian Knoth
2002-12-25 8:23 ` Hyman Rosen
2002-12-27 17:27 ` Kevin Cline
2002-12-28 1:56 ` Bill Findlay
2002-12-28 2:13 ` Bill Findlay
2002-12-29 6:07 ` Hyman Rosen
2002-12-23 20:52 ` Wojtek Narczynski
2002-12-23 20:07 ` chris.danx
2003-01-02 10:04 ` John McCabe
2003-01-02 21:32 ` Bill Findlay
2003-01-04 22:55 ` David Wright
2003-01-05 0:50 ` Bill Findlay
2003-01-05 2:18 ` David Wright
2003-01-05 3:57 ` John R. Strohm
2003-01-10 2:51 ` Richard Riehle
2003-01-10 9:45 ` David Wright
2003-01-10 10:59 ` Richard Riehle
2003-01-11 17:47 ` u.r. faust
2003-01-06 9:43 ` John McCabe
2003-01-06 10:05 ` John McCabe
2003-01-06 11:13 ` Bill Findlay
2003-01-10 2:58 ` Richard Riehle
2003-01-10 9:29 ` John McCabe
2002-12-21 11:57 ` Why is Ada NOT a good choice for a beginner to programming? David Marceau
2002-12-21 15:59 ` Alfred Hilscher
2002-12-21 17:48 ` Britt Snodgrass
2002-12-21 20:05 ` Peter Hend�n
2002-12-22 1:54 ` faust
2002-12-22 1:28 ` Hyman Rosen
2002-12-22 2:11 ` Larry Kilgallen
2002-12-22 22:49 ` faust
[not found] ` <u7m2ua.qk3.ln@beastie.ix.netcom.com>
2002-12-23 14:55 ` Wes Groleau
2002-12-24 14:01 ` W D Tate
2002-12-24 20:06 ` Rod Haper
2002-12-25 0:37 ` noone
2002-12-26 13:23 ` W D Tate
2002-12-26 20:37 ` David Starner
2002-12-27 14:02 ` W D Tate
2003-01-13 12:18 ` John English
-- strict thread matches above, loose matches on Subject: below --
2002-12-21 15:47 Alexandre E. Kopilovitch
2002-12-23 14:48 ` Wes Groleau
2003-01-10 6:38 Grein, Christoph
2003-01-10 8:21 ` Hyman Rosen
2003-01-10 15:51 ` Kevin Cline
2003-01-10 19:00 ` Kevin Cline
2003-01-10 8:35 Grein, Christoph
2003-01-10 9:26 ` Hyman Rosen
2003-01-13 16:49 ` Hyman Rosen
2003-01-13 6:13 Grein, Christoph
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