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From: Simon Wright <simon@pushface.org>
Subject: Re: Introductory Ada Programming Book
Date: Wed, 04 Jan 2017 15:15:13 +0000
Date: 2017-01-04T15:15:13+00:00	[thread overview]
Message-ID: <lya8b6g8la.fsf@pushface.org> (raw)
In-Reply-To: o4j005$2m1$1@gioia.aioe.org

"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> writes:

> On 2017-01-04 14:45, raph.amiard@gmail.com wrote:
>
>> Or do it Swift's way and use flow analysis to make use of an
>> uninitialized variable a compile time error.
>
> That is a bad idea. If uninitialized variable is an error then that
> must make the program illegal. If the program is still legal, then it
> is not an error.

Swift's way appears to be that *using* an uninitialized variable is an
error (provided that the compiler can detect it, of course).

GNAT has warnings about possible UBI, I think. And SPARK makes it an
error.

  reply	other threads:[~2017-01-04 15:15 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-31 13:18 Introductory Ada Programming Book Andrew Shvets
2016-12-31 14:26 ` Lucretia
2016-12-31 15:10   ` Dmitry A. Kazakov
2016-12-31 17:14     ` Andrew Shvets
2016-12-31 14:28 ` Lucretia
2016-12-31 14:34 ` Lucretia
2016-12-31 17:22   ` Andrew Shvets
2016-12-31 17:59 ` Gour
2017-01-02 15:56   ` Andrew Shvets
2017-01-02 16:32     ` Gour
2017-01-03 15:31 ` Patrick Noffke
2017-01-03 22:18   ` Andrew Shvets
2017-01-04  1:14 ` Paul Rubin
2017-01-04  3:07   ` Andrew Shvets
2017-01-04  6:46     ` J-P. Rosen
2017-01-04  9:25       ` raph.amiard
2017-01-04 12:40         ` J-P. Rosen
2017-01-04 12:49           ` Dmitry A. Kazakov
2017-01-04 13:45             ` raph.amiard
2017-01-04 14:14               ` Dmitry A. Kazakov
2017-01-04 15:15                 ` Simon Wright [this message]
2017-01-10 10:02                 ` raph.amiard
2017-01-04 15:18               ` Shark8
2017-01-04 21:47                 ` Randy Brukardt
2017-01-05  3:04                   ` Shark8
2017-01-05  7:51                     ` G.B.
2017-01-04 13:44           ` raph.amiard
2017-01-04 22:08             ` Jeffrey R. Carter
2017-01-04 22:39             ` Niklas Holsti
2017-01-05  0:38               ` G.B.
2017-01-05 23:52               ` Randy Brukardt
2017-01-05  6:36             ` J-P. Rosen
2017-01-05  8:38               ` Simon Wright
2017-01-10 10:13               ` raph.amiard
2017-01-09 22:01             ` Robert Eachus
2017-01-04 23:42 ` Andrew Shvets
2017-01-05  0:47   ` G.B.
2017-01-05 19:01   ` Jacob Sparre Andersen
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