From: Remi VANICAT <vanicat@labri.u-bordeaux.fr>
To: caml-list@inria.fr
Subject: Re: [Caml-list] Class Events
Date: 15 Jan 2002 19:56:51 +0100 [thread overview]
Message-ID: <87zo3f5tos.dlv@wanadoo.fr> (raw)
In-Reply-To: <004a01c19df4$422470b0$9600a8c0@warp>
"Warp" <warplayer@free.fr> writes:
> Hello, i'm trying to have my class having some event callback like this :
>
> class wmenuitem (fcallback:wmenuitem->unit) =
> object(self)
> val func = fcallback
> method activate = (func self)
> end
>
> but I'm having :
>
> This expression has type < activate : 'a; .. > but is here used with type
> wmenuitem = < .. >
> Self type cannot escape its class
>
> Is it really true that self cannot be a parameter ?
> Any help ?
Yes : let the compiler guess the type :
class wmenuitem (fcallback:'a -> unit) =
object(self)
val func = fcallback
method activate = (func self)
end
--
Rémi Vanicat
vanicat@labri.u-bordeaux.fr
http://dept-info.labri.u-bordeaux.fr/~vanicat
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prev parent reply other threads:[~2002-01-15 18:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-15 18:37 Warp
2002-01-15 18:56 ` Remi VANICAT [this message]
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