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From: Andy Yang <yyu08@yahoo.com>
To: caml-list@inria.fr
Subject: [Caml-list] Why type infenere enter infinte loop here?
Date: Tue, 6 Jul 2004 16:24:50 -0700 (PDT)	[thread overview]
Message-ID: <20040706232450.39587.qmail@web53206.mail.yahoo.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0407021252550.4202-100000@localhost.localdomain>

Hi, all

I am relatively new in Ocaml. Perhaps this problem is
trivial. With the following interactive process, ocaml
cannot give out f2's type. Could you tell me why it
cannot?
                                                      
                         
# let rec y f = f (fun x ->(y f) x);;
val y : (('a -> 'b) -> 'a -> 'b) -> 'a -> 'b = <fun>
# let g h x = h x;;
val g : ('a -> 'b) -> 'a -> 'b = <fun>
# let f1 = y g;;
val f1 : '_a -> 'b = <fun>
# let k x = x * x + 1;;
val k : int -> int = <fun>
# let f2 = f1 k;;

Thanks a lot!

Andy


		
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  reply	other threads:[~2004-07-06 23:24 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-07-02 17:36 [Caml-list] Y combinator and type-checking Martin Berger
2004-07-02 17:54 ` Brian Hurt
2004-07-06 23:24   ` Andy Yang [this message]
2004-07-06 23:41 [Caml-list] Why type infenere enter infinte loop here? Kevin S. Millikin

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