From: "Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org>
Subject: Re: Ada Alternatives to Unrestricted_Access
Date: Mon, 12 Mar 2018 17:28:03 +0100
Date: 2018-03-12T17:28:03+01:00 [thread overview]
Message-ID: <p869qj$mhq$1@dont-email.me> (raw)
In-Reply-To: <cbefecf5-5178-43c6-8544-51b9b64f56bc@googlegroups.com>
On 03/11/2018 08:53 PM, Jere wrote:
>
> procedure Debug_Print(C : Container) is
> begin
> for E of C loop
> Ada.Text_IO.Put_Line(Element'Image(E));
> end loop;
> end Debug_Print;
>
> procedure Nefarious(C : in out Container) is
> begin
> for E of C loop
> if E = Some_Value then
> <do some stuff>
> C.Delete(E); -- tamper check!
> end loop;
> end Nefarious;
If you can't do both with standard, checked programming, then user-defined
iteration is broken.
> It's all pre-existing code. I don't want to add anything. The
> iteration was already there. The owner asked to see if I could
> get rid of some GNAT specific extensions easily.
> One was the use of Unrestricted_Access, which led me to the original
> question. They didn't want a major overhaul of the code.
Address-to-access conversions should be correct and portable, but
'Unrestricted_Access is probably clearer.
--
Jeff Carter
"We'll make Rock Ridge think it's a chicken
that got caught in a tractor's nuts!"
Blazing Saddles
87
next prev parent reply other threads:[~2018-03-12 16:28 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-07 20:11 Ada Alternatives to Unrestricted_Access Jere
2018-03-07 20:38 ` Dmitry A. Kazakov
2018-03-07 22:29 ` Jere
2018-03-08 8:27 ` Dmitry A. Kazakov
2018-03-09 0:43 ` Jere
2018-03-09 0:52 ` Jere
2018-03-09 8:28 ` Dmitry A. Kazakov
2018-03-11 0:31 ` Jere
2018-03-08 3:18 ` gautier_niouzes
2018-03-09 0:41 ` Jere
2018-03-08 17:51 ` Jeffrey R. Carter
2018-03-09 0:36 ` Jere
2018-03-09 16:46 ` Jeffrey R. Carter
2018-03-11 0:38 ` Jere
2018-03-11 9:57 ` Jeffrey R. Carter
2018-03-11 10:44 ` Dmitry A. Kazakov
2018-03-11 14:31 ` Jere
2018-03-11 15:49 ` Jeffrey R. Carter
2018-03-11 17:33 ` Jere
2018-03-11 18:12 ` Jeffrey R. Carter
2018-03-11 19:53 ` Jere
2018-03-12 16:28 ` Jeffrey R. Carter [this message]
2018-03-11 18:27 ` Niklas Holsti
2018-03-11 20:07 ` Jere
2018-03-12 23:35 ` Randy Brukardt
2018-03-12 23:30 ` Randy Brukardt
2018-03-13 7:46 ` Niklas Holsti
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