From: Remi VANICAT <vanicat@labri.u-bordeaux.fr>
To: caml-list@inria.fr
Subject: Re: [Caml-list] a design problem requiring downcasting? (long)
Date: 26 Sep 2002 17:27:04 +0200 [thread overview]
Message-ID: <ya3d6r0db5j.dlv@serveur4.labri.fr> (raw)
In-Reply-To: <3D932579.1839FFF2@noos.fr>
nadji@noos.fr writes:
> Hi,
>
> If I understood your problem, Jacques Garrigue has shown a way
> to allow "safe" downcast, that is to say that if you can't downcast you
> cleanly get an exeption. You are required to register your class for
> all the downcasts you wants, and it will work only for them (i.e. if
> you don't register you can't downcast). This is the "memo" class
> in the code below.
> Following this idea, your simulation manager has to define all the interfaces it
> will be using, and the simulations have to register themselves before
> beeing used.
> Code follows :
>
It is what my hweak library is doing. the only difference is that I
use my own Hashtbl with weak pointer (so object that are in my memo
object can be collected by the GC).
--
Rémi Vanicat
vanicat@labri.u-bordeaux.fr
http://dept-info.labri.u-bordeaux.fr/~vanicat
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next prev parent reply other threads:[~2002-09-26 15:27 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-26 9:01 Michael Vanier
2002-09-26 14:32 ` Remi VANICAT
2002-09-26 15:19 ` nadji
2002-09-26 15:27 ` Remi VANICAT [this message]
2002-09-26 15:55 ` nadji
2002-09-26 15:53 ` Jeffrey Palmer
2002-09-26 16:35 ` Oleg
2002-09-26 17:47 ` brogoff
2002-09-26 19:14 ` Fred Smith
2002-09-27 17:01 ` Tim Freeman
2002-09-26 22:46 ` Alessandro Baretta
2002-09-27 7:20 ` Francois Pottier
2002-09-27 10:16 ` Michael Vanier
2002-09-29 22:59 ` Alessandro Baretta
2002-09-30 7:09 ` Michael Vanier
2002-09-30 9:54 ` Alessandro Baretta
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