From: stt@henning.camb.inmet.com (Tucker Taft)
Subject: Re: An observation of Ada (may offend)
Date: Sat, 18 Mar 1995 12:41:06 GMT
Date: 1995-03-18T12:41:06+00:00 [thread overview]
Message-ID: <D5Mz8J.AHB@inmet.camb.inmet.com> (raw)
In-Reply-To: 3kbkm1$41o@miranda.gmrc.gecm.com
R.A.L Williams (bill@valiant.gmrc.gecm.com) wrote:
: h. And a special one for Ada95: poor encapsulation of objects. I can
: define a 'member function' for a class by including the class in the
: parameter list. Unlike C++ or Eiffel, I can do this *anywhere* in my code,
: even a nested function hidden somewhere seemingly 'irrelevant'. Whereas
: other features of Ada go out of their way to force the programmer to
: follow 'good practice' (sometimes a matter of opinion), this seems
: very lax.
What are called "methods" in some OOPs are called "primitive
operations" or "dispatching operations" in Ada 95. These
may be defined *only* immediately within the same package
spec as the type. (If a type extension is declared in a package body or
declarative part, you can override inherited primtive ops there -- and
only there -- for that typ extension, but you can't define any new ones.)
So I don't think Ada 95 suffers from the above problem. Perhaps
you were referring to something else, but I can't quite imagine what
problem it would be. An example might help. We certainly never meant
for Ada 95 to be "lax" ;-).
: Bill Williams
: bill.williams@gec-mrc.co.uk
-Tucker Taft stt@inmet.com
Intermetrics, Inc.
next prev parent reply other threads:[~1995-03-18 12:41 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
1995-03-17 9:27 An observation of Ada (may offend) R.A.L Williams
1995-03-17 15:23 ` Robb Nebbe
1995-03-17 17:08 ` Norman H. Cohen
1995-03-20 3:23 ` S. Tucker Taft
1995-03-20 10:13 ` Robb Nebbe
1995-03-21 21:05 ` Robert Dewar
1995-03-20 16:15 ` Robert I. Eachus
1995-03-21 19:47 ` Norman H. Cohen
1995-03-22 1:28 ` David Weller
1995-03-23 5:47 ` Robert Dewar
1995-03-23 16:38 ` Robert I. Eachus
1995-03-24 10:46 ` Peter Hermann
1995-03-24 16:52 ` David Weller
1995-03-26 4:03 ` Robert Dewar
1995-03-24 21:33 ` Tucker Taft
1995-03-27 9:59 ` Child packages Robb Nebbe
1995-03-28 1:11 ` Keith Thompson
1995-03-28 11:54 ` Keith Thompson
1995-03-27 18:58 ` An observation of Ada (may offend) Mark A Biggar
1995-03-24 19:45 ` Garlington KE
1995-03-27 19:58 ` Robert I. Eachus
1995-03-28 16:29 ` Garlington KE
1995-03-28 19:30 ` Robert I. Eachus
1995-03-28 22:37 ` Garlington KE
1995-03-29 8:31 ` Robb Nebbe
1995-03-25 17:58 ` Robert Dewar
1995-03-26 6:20 ` R_Tim_Coslet
1995-03-27 20:38 ` Robert I. Eachus
1995-03-26 3:50 ` celier
[not found] ` <3l1lkq$pm6@gnat.csn <3l2o9a$3a1@infomatch.com>
1995-03-27 23:16 ` Robert Dewar
1995-03-23 18:05 ` John DiCamillo
1995-03-17 23:01 ` Larry Kilgallen, LJK Software
1995-03-18 12:41 ` Tucker Taft [this message]
1995-03-22 16:50 ` Renaud HEBERT
1995-03-23 23:23 ` John Volan
1995-03-24 0:38 ` Robert Dewar
-- strict thread matches above, loose matches on Subject: below --
1995-03-30 0:00 R.A.L Williams
1995-04-03 0:00 ` Norman H. Cohen
1995-03-29 0:00 R.A.L Williams
1995-03-27 10:38 R.A.L Williams
1995-03-30 3:14 ` Michael D. Griffin
1995-03-30 0:00 ` David Weller
1995-04-04 0:00 ` Brian Rogoff
1995-04-04 0:00 ` Jack Beidler
1995-03-27 10:28 R.A.L Williams
1995-03-27 0:00 ` Norman H. Cohen
1995-04-04 0:00 ` Robert Dewar
1995-03-28 17:07 ` Larry Kilgallen, LJK Software
1995-03-12 23:39 Matt Bruce
1995-03-13 0:34 ` David Weller
1995-03-14 4:49 ` Vladimir Vukicevic
1995-03-17 17:00 ` Michael Feldman
1995-03-17 13:09 ` Fred J. McCall
1995-03-18 20:34 ` Michael Feldman
1995-03-19 22:20 ` Robert Dewar
1995-03-20 17:19 ` Michael Feldman
1995-03-21 21:02 ` Robert Dewar
1995-03-21 23:01 ` Kevin F. Quinn
1995-03-22 12:43 ` Mike Meier
1995-03-20 20:38 ` Kevin F. Quinn
1995-03-21 3:02 ` Michael M. Bishop
1995-03-20 9:31 ` Robb Nebbe
1995-03-20 20:16 ` Mats Weber
1995-03-22 19:44 ` Stephen McNeill
1995-03-28 14:48 ` Wes Groleau
1995-03-22 17:20 ` Richard G. Hash
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