From: stalkern2 <stalkern2@tin.it>
To: caml-list@inria.fr
Subject: Re: [Caml-list] Odd Type Checking Problem
Date: Wed, 6 Feb 2002 22:15:12 -0500 [thread overview]
Message-ID: <20020206210928.ZBAC3917.fep40-svc.tin.it@there> (raw)
In-Reply-To: <Pine.OSF.4.21.0202061435110.17375-100000@is04.fas.harvard.edu>
Beginner's opinion:
I think that the compiler/interpreter is clear:
'a->'b->'a
is not
'a->'a->'b->'a
and that you just let the function starve before giving it the last meatball.
Look:
# let mAny: 'a -> int -> 'a = fun succ0 input -> succ0 in
let ans0 = true in
let x = mAny (mAny ans0 1) in
x 2;;
- : bool = true
Ciao
Ernesto
Alle ore 14:37, mercoledì 06 febbraio 2002, Jonathan D Eddy ha scritto:
> (* type checks *)
> let mAny = fun succ0 input -> succ0 in
> let ans0 = true in
> let x = mAny (mAny ans0) in
> x 1 2
>
> (* does not type check *)
> let mAny: 'a -> int -> 'a = fun succ0 input -> succ0 in
> let ans0 = true in
> let x = mAny (mAny ans0) in
> x 1 2
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next prev parent reply other threads:[~2002-02-06 21:09 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-06 19:37 Jonathan D Eddy
2002-02-06 22:59 ` Alain Frisch
2002-02-07 9:45 ` Tom Hirschowitz
2002-02-07 10:04 ` Tom Hirschowitz
2002-02-07 11:21 ` [Caml-list] Type variables (was: Odd Type Checking Problem) Alain Frisch
2002-02-07 12:25 ` Markus Mottl
2002-02-08 1:33 ` Jacques Garrigue
2002-02-08 9:24 ` Markus Mottl
2002-02-07 3:15 ` stalkern2 [this message]
2002-02-06 21:19 ` [Caml-list] Odd Type Checking Problem Remi VANICAT
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