From: David Teller <David.Teller@ens-lyon.org>
To: Zheng Li <li@pps.jussieu.fr>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] Re: Why can't I call a function over a subclass?
Date: Fri, 05 Oct 2007 16:02:11 +0200 [thread overview]
Message-ID: <1191592931.6509.33.camel@Blefuscu> (raw)
In-Reply-To: <87ejg9oms3.fsf@pps.jussieu.fr>
Sure. I'm just saying that this default behaviour is disconcerting.
In addition to which, while it does appear in the documentation, it's
rather well hidden inside section 3.11 "Polymorphic methods" -- even
though this is not a method.
Cheers,
David
On Fri, 2007-10-05 at 12:53 +0200, Zheng Li wrote:
> David Teller <David.Teller@ens-lyon.org> writes:
> > I agree with Luca that it's disconcerting.
> > When r is a class, I would expect
>
> > let f (x:r) (y:r) =...
> This expression says f accept arguments of type [r], what you mean to say is: f
> accept any arguments belong to [r]'s subtypes family. Then say it with
>
> # let f (x:#r) (y:#r) = x#get_x = y#get_x
> val f : #r -> #r -> bool = <fun>
>
next prev parent reply other threads:[~2007-10-05 14:02 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-05 7:48 Luca de Alfaro
2007-10-05 8:01 ` [Caml-list] " Florian Hars
2007-10-05 8:08 ` Luca de Alfaro
2007-10-05 8:08 ` Fwd: " Luca de Alfaro
2007-10-05 11:08 ` Vincent Aravantinos
2007-10-05 11:47 ` Christophe Raffalli
2007-10-05 10:30 ` David Teller
2007-10-05 10:53 ` Zheng Li
2007-10-05 14:02 ` David Teller [this message]
2007-10-05 14:59 ` [Caml-list] " Luca de Alfaro
2007-10-05 15:12 ` Luca de Alfaro
[not found] ` <20071005152130.M41697@cs.unm.edu>
2007-10-05 15:49 ` Luca de Alfaro
2007-10-05 16:34 ` Edgar Friendly
2007-10-05 17:39 ` Luca de Alfaro
2007-10-05 17:49 ` Martin Jambon
[not found] ` <28fa90930710052153k2128bb63m5132455868eb2008@mail.gmail.com>
2007-10-07 22:19 ` Martin Jambon
2007-10-07 22:57 ` Classes and polymorphism (Re: [Caml-list] Re: Why can't I call a function over a subclass?) Martin Jambon
2007-10-05 19:48 ` Why can't I call a function over a subclass? Zheng Li
2007-10-06 1:49 ` [Caml-list] " Jake Donham
2007-10-09 4:18 ` Jacques Garrigue
2007-10-05 8:07 ` [Caml-list] " Pietro Abate
2007-10-05 10:55 ` Andrej Bauer
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