From: Georg Bauhaus <bauhaus@futureapps.de>
Subject: Re: Instantiating private types with discriminants?
Date: Fri, 12 May 2006 11:24:52 +0200
Date: 2006-05-12T11:24:00+02:00 [thread overview]
Message-ID: <1147425891.9012.10.camel@localhost.localdomain> (raw)
In-Reply-To: <2l9uhyhkrquy.1rbhnqk1k2u52$.dlg@40tude.net>
On Fri, 2006-05-12 at 09:37 +0200, Dmitry A. Kazakov wrote:
> I beg to disagree. Semantic difference you are talking about is not always
> the problem space's one. It is often just a language artefact. In my view,
> exactly the opposite should be done, i.e. removing all traces of "all".
> (:-)) A user-defined pointer (referential) type should (IMO) be considered
> a subtype, that inherits all operations of the target type. If assignment
> gets overridden (to have shallow copy semantics), that does not
> automatically imply anything for other operations.
Will the programmer have a chance to express whether or not
he or she is effectively creating an alias?
Eiffel addresses this in a reversed way, I think. You can write
"expanded" before a class definition, or before the type name
in a feature declaration. So no ".all" either, but at least
a trace of objects versus references.
next prev parent reply other threads:[~2006-05-12 9:24 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-09 13:17 Instantiating private types with discriminants? rick H
2006-05-09 13:45 ` Georg Bauhaus
2006-05-09 14:06 ` rick H
2006-05-09 13:56 ` Ludovic Brenta
2006-05-09 14:24 ` rick H
2006-05-09 19:48 ` Ludovic Brenta
2006-05-09 14:05 ` Dmitry A. Kazakov
2006-05-09 14:48 ` rick H
2006-05-09 15:20 ` Jerry Petrey
2006-05-09 15:42 ` rick H
2006-05-09 15:53 ` Avoiding use Ada.Tags (was Re: Instantiating private types with discriminants?) Alex R. Mosteo
2006-05-09 16:01 ` Instantiating private types with discriminants? Dmitry A. Kazakov
2006-05-10 7:42 ` rick H
2006-05-10 9:09 ` Ludovic Brenta
2006-05-10 11:49 ` Georg Bauhaus
2006-05-10 13:44 ` rick H
2006-05-10 14:21 ` Ludovic Brenta
2006-05-10 15:10 ` rick H
2006-05-10 15:45 ` Ludovic Brenta
2006-05-10 14:41 ` Dmitry A. Kazakov
2006-05-10 15:34 ` rick H
2006-05-10 19:01 ` Georg Bauhaus
2006-05-10 19:05 ` Ludovic Brenta
2006-05-10 21:52 ` Rick H
2006-05-11 1:17 ` Jeffrey R. Carter
2006-05-11 7:44 ` Dmitry A. Kazakov
2006-05-11 8:27 ` rick H
2006-05-11 10:28 ` Dmitry A. Kazakov
2006-05-11 15:59 ` Robert A Duff
2006-05-12 7:37 ` Dmitry A. Kazakov
2006-05-12 9:24 ` Georg Bauhaus [this message]
2006-05-12 12:40 ` Dmitry A. Kazakov
2006-05-12 18:25 ` Randy Brukardt
2006-05-09 19:57 ` "Use" and "=" for Tags (was: Re: Instantiating private types with discriminants?) Jeffrey R. Carter
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