From: nakata keiko <keiko@kaba.or.jp>
To: IdeFX@Iname.com
Cc: caml-list@inria.fr, keiko@kaba.or.jp
Subject: Re: [Caml-list] troubles with polymorphic variant in class
Date: Mon, 14 Jun 2004 23:48:27 +0900 (JST) [thread overview]
Message-ID: <20040614.234827.74677774.keiko@kaba.or.jp> (raw)
In-Reply-To: <1087142756.10383.50.camel@Bess>
I hope this would be of some help.
module type Ct = sig type t end
module type Crec =
sig
module T : Ct
class button : object method add_child : T.t -> unit end
end
module COt(Crec : Crec) =
struct type t = [`Whatever|`Button of Crec.button]
end
module CO(Crec : Crec) =
struct
module T = COt(Crec)
class button =
object
val mutable children : T.t list = [`Whatever]
method add_child x = children <- x::children
end
end
module rec X : (Crec with module T = COt(X)) = CO(X)
As I done, you can specify the type of elements of the list "children"
inside "COt".
The above code is taken from
http://caml.inria.fr/archives/200403/msg00344.html
with best regards.
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prev parent reply other threads:[~2004-06-14 14:48 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-13 16:05 François-Xavier HOUARD
2004-06-13 17:59 ` skaller
2004-06-14 9:29 ` François-Xavier HOUARD
2004-06-14 9:48 ` Damien Doligez
2004-06-14 15:49 ` skaller
2004-06-14 9:37 ` Richard Jones
2004-06-14 14:48 ` nakata keiko [this message]
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