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From: rod@praxis-cs.co.uk (Rod Chapman)
Subject: Re: Understanding Booleans
Date: 22 Nov 2001 07:51:51 -0800
Date: 2001-11-22T15:51:52+00:00	[thread overview]
Message-ID: <ba18d5cb.0111220751.3ba7797a@posting.google.com> (raw)
In-Reply-To: 5ee5b646.0111212023.17ab963d@posting.google.com

>    A := (b = c) or (e = f);
> 
> some people prefer to write
> 
>    if (b = c) or (e = f) then
>       A := True;
>    else
>       A := False;
>    end if;

The latter form suffers slightly from introducing two paths,
whereas the former only has one (ignoring the possibility
for the moment of the compiler transforming the "or" into
an "or else".) This could have a negative
effect on coverage analysis and the volume (but
not the difficulty) of code proof.
 - Rod



  parent reply	other threads:[~2001-11-22 15:51 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-11-21  4:35 Gtkada-Prob Lars Heppler
2001-11-21  9:37 ` Gtkada-Prob Adrian Knoth
2001-11-21 18:52   ` Gtkada-Prob Preben Randhol
2001-11-21  9:38 ` Gtkada-Prob Preben Randhol
2001-11-21 10:02   ` Gtkada-Prob Count Zero
2001-11-21 17:06   ` Understanding Booleans Jeffrey Carter
2001-11-21 17:19     ` Jean-Marc Bourguet
2001-11-21 17:29     ` Preben Randhol
2001-11-21 20:05       ` Stephen Leake
2001-11-21 21:33         ` Florian Weimer
2001-11-22  4:23     ` Robert Dewar
2001-11-22 10:39       ` Preben Randhol
2001-11-22 15:51       ` Rod Chapman [this message]
2001-11-23  3:51         ` Robert Dewar
2001-11-24 20:09     ` Richard Riehle
2001-11-25  9:08       ` Pascal Obry
2001-11-25 15:06         ` Florian Weimer
2001-11-27  9:46           ` AG
2001-11-25 21:44       ` Jeffrey Carter
2001-11-21 10:19 ` Gtkada-Prob Florian Weimer
2001-11-21 10:36   ` Gtkada-Prob Preben Randhol
2001-11-21 10:39   ` Gtkada-Prob Count Zero
2001-11-21 10:50     ` Gtkada-Prob Preben Randhol
2001-11-21 10:57       ` Gtkada-Prob Lars Heppler
2001-11-21 11:53         ` Gtkada-Prob Preben Randhol
2001-11-21 12:24           ` Gtkada-Prob Florian Weimer
2001-11-21 12:57             ` Gtkada-Prob Preben Randhol
2001-11-21 17:33     ` Gtkada-Prob Adrian Knoth
2001-11-22 10:32       ` Gtkada-Prob Preben Randhol
2001-11-22 16:36         ` Gtkada-Prob Adrian Knoth
2001-11-22 21:13         ` Gtkada-Prob Jeffrey Carter
2001-11-23 10:17           ` Gtkada-Prob Preben Randhol
2001-11-26  6:47             ` Use of use, was Gtkada-Prob Anders Wirzenius
2001-11-26  9:25               ` Preben Randhol
2001-11-27  6:28                 ` Anders Wirzenius
2001-11-27 14:06                   ` Stephen Leake
2001-11-23 17:26 ` Gtkada-Prob Arnaud Charlet
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