From: Andres Varon <avaron@gmail.com>
To: skaller <skaller@users.sourceforge.net>
Cc: caml-list <caml-list@inria.fr>
Subject: Re: [Caml-list] Polymorphic variants problem
Date: Sat, 2 Sep 2006 21:12:16 -0400 [thread overview]
Message-ID: <23AFCAC0-88AD-4FD3-85D3-1F37798DF59B@gmail.com> (raw)
In-Reply-To: <1157244509.12057.29.camel@rosella.wigram>
>
> Now, I just tried to use my super term union, but I ran
> into a problem. It looks like a fault in type inference,
> something like this:
>
> let f (x:[`A|`B]) = ..
> let g (x:[`A]) = ..
> ..
> fun x ->
> f x;
> g x;
> ..
>
You have to define it as follows:
let f (x : [< `A | `B ]) = ..
let g (x : [`A]) =
to let the compiler know that the argument of f could be refined
further.
prev parent reply other threads:[~2006-09-03 1:12 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-01 17:31 Polymorphic variants question David Allsopp
2006-09-01 18:33 ` Chris King
2006-09-01 19:00 ` [Caml-list] " skaller
2006-09-01 19:57 ` David Allsopp
2006-09-01 20:40 ` Jacques Carette
2006-09-01 18:40 ` [Caml-list] " Olivier Andrieu
2006-09-01 19:26 ` Jon Harrop
2006-09-01 19:29 ` skaller
2006-09-01 20:49 ` Andres Varon
2006-09-02 11:16 ` Jacques Garrigue
2006-09-03 1:22 ` Andres Varon
2006-09-03 9:08 ` Jacques Garrigue
2006-09-03 15:00 ` Andres Varon
2006-09-03 23:18 ` Jacques Garrigue
2006-09-03 0:48 ` [Caml-list] Polymorphic variants problem skaller
2006-09-03 1:12 ` Andres Varon [this message]
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