From: Stefano Zacchiroli <zack@cs.unibo.it>
To: caml-list@inria.fr
Subject: Re: [Caml-list] Open types and methods
Date: Sun, 3 Nov 2002 11:57:27 +0100 [thread overview]
Message-ID: <20021103105727.GB10959@lordsoth.takhisis.org> (raw)
In-Reply-To: <87bs57eyib.fsf@marant.org>
On Sun, Nov 03, 2002 at 11:30:36AM +0100, J?r?me Marant wrote:
> I know that I cannot use open types as method parameter types,
> like:
>
> method foo (w : #mother) = ....
>
> So, how can I pass to a method an object of a given class or
> of its inherited classes, i.e. how to work this limitation
> around?
Just define the method as:
method foo (w: #mother) = ...
And cast the object when invoking foo:
obj#foo (son :> mother)
Cheers.
--
Stefano Zacchiroli - undergraduate student of CS @ Univ. Bologna, Italy
zack@cs.unibo.it | ICQ# 33538863 | http://www.cs.unibo.it/~zacchiro
"I know you believe you understood what you think I said, but I am not
sure you realize that what you heard is not what I meant!" -- G.Romney
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next prev parent reply other threads:[~2002-11-03 10:58 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-03 10:30 Jérôme Marant
2002-11-03 10:57 ` Stefano Zacchiroli [this message]
2002-11-04 8:48 ` Stefano Zacchiroli
2002-11-03 11:29 ` Olivier Andrieu
2002-11-03 15:13 ` Jérôme Marant
-- strict thread matches above, loose matches on Subject: below --
2002-11-02 20:16 [Caml-list] Ocaml et la Standard Library poinca
2002-11-03 11:18 ` Remi VANICAT
2002-11-03 12:23 ` Sven Luther
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