From: Richard Jones <rich@annexia.org>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] Questions about types and objects
Date: Tue, 3 Feb 2004 09:32:35 +0000 [thread overview]
Message-ID: <20040203093235.GA18033@redhat.com> (raw)
In-Reply-To: <401F0263.8030105@itee.uq.edu.au>
On Tue, Feb 03, 2004 at 12:07:31PM +1000, Richard Cole wrote:
> From an expression:
>
> diagram#make_from_hasse lattice;
You need to upcast it. I've never really understood why this is
necessary.
diagram#make_from_hasse (lattice :> abstract_hasse_diagram);
Rich.
--
Richard Jones. http://www.annexia.org/ http://www.j-london.com/
Merjis Ltd. http://www.merjis.com/ - improving website return on investment
Perl4Caml lets you use any Perl library in your type-safe Objective
CAML programs. http://www.merjis.com/developers/perl4caml/
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prev parent reply other threads:[~2004-02-03 9:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-03 2:07 Richard Cole
2004-02-03 9:32 ` Richard Jones [this message]
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