From: "Alex R. Mosteo" <alejandro@mosteo.com>
Subject: Re: Vector of Vectors.
Date: Thu, 15 Jan 2009 11:10:07 +0100
Date: 2009-01-15T11:10:07+01:00 [thread overview]
Message-ID: <6t8gc1F9ej88U1@mid.individual.net> (raw)
In-Reply-To: aqxbl.525097$yE1.73554@attbi_s21
Jeffrey R. Carter wrote:
> Peter C. Chapin wrote:
>>
>> Surely there must be a straight forward way to do this!
>
> I'd probably use Update_Element.
Which one could argue is straightforward from a conceptual point of view,
but requires a lot of typing.
I think there was an old discussion about why it was not a good idea to have
functions returning accesses to the elements for this[*], which would enable
what Peter was attempting (since without something like C++ references
there's no way to do this with similar code). I have done so for my use
sometimes, but is ugly nonetheless. Exposing accesses to client code is not
nice, to put it mildly.
[*] Dangling pointers IIRC was the reason. In GNAT case I suspect that
dangling cursors is not any better since they don't do reference counting
anyway.
next prev parent reply other threads:[~2009-01-15 10:10 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-15 0:32 Vector of Vectors Peter C. Chapin
2009-01-15 2:44 ` Jeffrey R. Carter
2009-01-15 10:10 ` Alex R. Mosteo [this message]
2009-01-15 10:56 ` Georg Bauhaus
2009-01-15 20:44 ` Jeffrey R. Carter
2009-01-15 21:26 ` Robert A Duff
2009-01-17 10:20 ` Ivan Levashew
2009-01-17 10:51 ` Dmitry A. Kazakov
2009-01-17 16:45 ` Robert A Duff
2009-01-17 17:18 ` Dmitry A. Kazakov
2009-01-17 23:06 ` Robert A Duff
2009-01-18 9:44 ` Dmitry A. Kazakov
2009-01-17 16:41 ` Robert A Duff
2009-01-17 18:56 ` Georg Bauhaus
2009-01-17 22:59 ` Robert A Duff
2009-01-18 18:34 ` Georg Bauhaus
2009-01-18 21:29 ` Robert A Duff
2009-01-19 11:52 ` Georg Bauhaus
2009-01-19 12:39 ` Georg Bauhaus
2009-01-20 2:11 ` Randy Brukardt
2009-01-15 12:08 ` Peter C. Chapin
2009-01-16 10:15 ` Alex R. Mosteo
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