From: "Nicolas Cannasse" <warplayer@free.fr>
To: <skaller@users.sourceforge.net>,
"Jacques Garrigue" <garrigue@math.nagoya-u.ac.jp>
Cc: <caml-list@inria.fr>
Subject: Re: [Caml-list] Why doesn't ocamlopt detect a missing ; after failwith statement?
Date: Fri, 26 Nov 2004 08:08:57 +0100 [thread overview]
Message-ID: <004201c4d386$cc6fe4a0$19b0e152@warp> (raw)
In-Reply-To: <20041126.142525.93385094.garrigue@math.nagoya-u.ac.jp>
> P.S.
> I believe the problem with failwith is solvable, albeit rather
> complicated. The idea is that you want to be warned when you apply a
> function of type (\forall 'a. 'a) to something, because no such
> function may exist, so that this application will never actually take
> place.
>
> This could be done attempting to generalize the type of the function,
> once we now it is a type variable.
> I'll have a try.
Wouldn't that break Obj.magic ? I can't see a clear solution to this
problem, unless enabling arity specification into polymorphic variables :
'a.0 for example, but this would also break something like :
let f x = if x then failwith "error" else fun() -> x
I guess it's more like a syntax problem. For example having parenthesis for
function calls à la C would disable any ambiguity.
Nicolas
next prev parent reply other threads:[~2004-11-26 7:05 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-25 20:46 Richard Jones
2004-11-25 21:14 ` [Caml-list] " Nicolas Cannasse
2004-11-26 0:11 ` skaller
2004-11-26 0:44 ` Jacques Garrigue
2004-11-26 3:08 ` skaller
2004-11-26 5:25 ` Jacques Garrigue
2004-11-26 7:08 ` Nicolas Cannasse [this message]
2004-11-26 14:42 ` Jacques Garrigue
2004-11-26 17:01 ` Alain Frisch
2004-11-26 19:36 ` Michal Moskal
2004-11-26 17:01 ` Damien Doligez
2004-11-29 0:40 ` Jacques Garrigue
2004-11-29 11:07 ` [Caml-list] Why doesn't ocamlopt detect a missing ; afterfailwith statement? Frederic van der Plancke
2004-11-29 11:43 ` Jacques Garrigue
2004-11-29 11:27 ` Frederic van der Plancke
2004-11-26 22:24 ` [Caml-list] Why doesn't ocamlopt detect a missing ; after failwith statement? Hendrik Tews
2004-11-27 3:47 ` skaller
2004-11-29 0:01 ` Jacques Garrigue
2004-11-29 7:52 ` Marcin 'Qrczak' Kowalczyk
2004-11-26 3:58 ` skaller
2004-11-26 19:16 ` Brian Hurt
2004-11-26 9:01 ` Richard Jones
2004-11-26 9:56 ` skaller
2004-11-26 13:32 ` Ville-Pertti Keinonen
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