From: Ole-Hjalmar Kristensen <ole-hjalmar.kristensen@substitute_employer_here.com>
Subject: Re: Naming convention to identify functions with side effects
Date: 02 Oct 2008 14:33:32 +0200
Date: 2008-10-02T14:33:32+02:00 [thread overview]
Message-ID: <wvbrtzbvgorn.fsf@sun.com> (raw)
In-Reply-To: 48e13f14$0$6610$9b4e6d93@newsspool3.arcor-online.net
How would you implement the lock in youre case? I prefer not to mess
around with semaphores, but use protected objects instead. In that
case keeping the lock across the two calls is not so trivial.
>>>>> "GB" == Georg Bauhaus <see.reply.to@maps.futureapps.de> writes:
<snip>
GB> Some issues become more obvious in a concurrent setting
GB> perhaps,
GB> Web_Page.Load ("http://www.irvine.com");
GB> if Web_Page.Is_Loaded then...
GB> There needs to be a lock of some sort joining the two calls.
GB> Otherwise, the Web_Page object might have changed
GB> between the two calls, a logic error.
GB> Again, it might be tempting to pack the two calls in just
GB> one in order to hide the locking mechanism, to give the
GB> illusion of atomicity. But shouldn't normal Ada
GB> concurrency features be employed instead?
GB> If concurrency features of Ada are used instead, the
GB> naming problem is also gone:
GB> the commands (procedures) can be verbs and the queries
GB> (predicate functions) can be named "Is_Something" or
GB> "Has_Something".
--
C++: The power, elegance and simplicity of a hand grenade.
next prev parent reply other threads:[~2008-10-02 12:33 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-29 18:17 Naming convention to identify functions with side effects Hibou57 (Yannick Duchêne)
2008-09-29 18:45 ` Hibou57 (Yannick Duchêne)
2008-09-29 18:55 ` Adam Beneschan
2008-09-29 19:52 ` Dmitry A. Kazakov
2008-09-29 20:48 ` Georg Bauhaus
2008-09-29 21:10 ` Adam Beneschan
2008-09-30 15:17 ` Georg Bauhaus
2008-09-30 17:40 ` Ray Blaak
2008-10-02 12:33 ` Ole-Hjalmar Kristensen [this message]
2008-10-03 9:18 ` Georg Bauhaus
2008-10-06 7:24 ` Ole-Hjalmar Kristensen
2008-10-03 11:51 ` Brian Drummond
2008-10-03 12:28 ` Dmitry A. Kazakov
2008-10-04 12:30 ` Marco
2008-10-04 13:05 ` (see below)
2008-10-04 15:14 ` Gary Scott
2008-10-11 11:32 ` Marco
2008-10-11 14:57 ` Dmitry A. Kazakov
2008-10-11 16:05 ` (see below)
2008-10-11 17:49 ` Georg Bauhaus
2008-10-11 18:42 ` (see below)
2008-10-03 13:15 ` Jeffrey Creem
2008-09-29 20:57 ` Georg Bauhaus
2008-09-29 22:22 ` Dr. Adrian Wrigley
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