From: "J-P. Rosen" <rosen@adalog.fr>
Subject: Re: Strings with discriminated records
Date: Thu, 31 May 2018 06:19:28 +0200
Date: 2018-05-31T06:19:28+02:00 [thread overview]
Message-ID: <pent4f$nrj$1@gioia.aioe.org> (raw)
In-Reply-To: pen0eu$2fb$1@franka.jacob-sparre.dk
Le 30/05/2018 à 22:09, Randy Brukardt a écrit :
> (B) But package use clauses make things visible that are not overloadable
> (like objects), so they tend to be a substantial maintenance hazard --
> adding something to a package can make client code using use clauses illegal
> because of conflicts. Adding unrelated stuff should *never* make any client
> illegal (changes, obviously are different).
Here I don't agree. OF COURSE, changing a specification can make client
code illegal, with or without use clauses. And I would not call making
code illegal a "maintenance hazard"; on the contrary, a maintenance
hazard is when a change does not make code illegal, but acts
differently. We know how hard Tuck fought in Ada 95 to eliminate the
Beaujolais effect...
--
J-P. Rosen
Adalog
2 rue du Docteur Lombard, 92441 Issy-les-Moulineaux CEDEX
Tel: +33 1 45 29 21 52, Fax: +33 1 45 29 25 00
http://www.adalog.fr
next prev parent reply other threads:[~2018-05-31 4:19 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-26 21:43 Strings with discriminated records NiGHTS
2018-05-26 23:42 ` Shark8
2018-05-27 1:42 ` NiGHTS
2018-05-27 8:39 ` Dmitry A. Kazakov
2018-05-27 12:22 ` Mehdi Saada
2018-05-27 12:40 ` Dmitry A. Kazakov
2018-05-27 14:34 ` NiGHTS
2018-05-27 14:50 ` Dmitry A. Kazakov
2018-05-27 15:19 ` NiGHTS
2018-05-27 15:32 ` AdaMagica
2018-05-27 16:22 ` NiGHTS
2018-05-29 22:31 ` Randy Brukardt
2018-05-30 7:29 ` Dmitry A. Kazakov
2018-05-30 20:11 ` Randy Brukardt
2018-05-27 12:48 ` Mehdi Saada
2018-05-27 13:03 ` Dmitry A. Kazakov
2018-05-27 17:11 ` NiGHTS
2018-05-27 18:07 ` Simon Wright
2018-05-27 23:08 ` NiGHTS
2018-05-28 1:44 ` Jere
2018-05-28 3:05 ` NiGHTS
2018-05-28 3:23 ` NiGHTS
2018-05-27 18:25 ` Dmitry A. Kazakov
2018-05-27 22:44 ` NiGHTS
2018-05-28 7:29 ` Dmitry A. Kazakov
2018-05-28 7:42 ` Simon Wright
2018-05-28 18:38 ` Shark8
2018-05-28 21:15 ` Mehdi Saada
2018-05-28 21:48 ` Shark8
2018-05-28 22:27 ` Mehdi Saada
2018-05-28 23:59 ` Shark8
2018-05-29 0:41 ` Dan'l Miller
2018-05-30 17:11 ` Shark8
2018-05-29 7:49 ` Dmitry A. Kazakov
2018-05-29 9:31 ` AdaMagica
2018-05-29 10:14 ` Dmitry A. Kazakov
2018-05-29 13:40 ` Dan'l Miller
2018-05-29 14:04 ` Dmitry A. Kazakov
2018-05-29 22:41 ` Randy Brukardt
2018-05-30 5:00 ` J-P. Rosen
2018-05-30 20:09 ` Randy Brukardt
2018-05-31 4:19 ` J-P. Rosen [this message]
2018-05-31 22:18 ` Randy Brukardt
2018-06-01 13:35 ` Dan'l Miller
2018-06-01 15:20 ` Dmitry A. Kazakov
2018-05-28 13:55 ` NiGHTS
2018-05-29 14:37 ` Mehdi Saada
2018-05-29 22:44 ` Randy Brukardt
2018-05-29 22:41 ` Mehdi Saada
2018-05-30 19:46 ` Randy Brukardt
2018-05-30 19:48 ` Randy Brukardt
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