From: Laurent Vibert <lvibert@irisa.fr>
To: Patrick M Doane <patrick@watson.org>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] Polymorphic variant abbreviations
Date: Wed, 19 Sep 2001 10:01:12 +0200 (MET DST) [thread overview]
Message-ID: <Pine.GSO.4.21.0109190955400.444-100000@mushroom.irisa.fr> (raw)
In-Reply-To: <Pine.BSF.3.96.1010918174443.58189A-100000@fledge.watson.org>
On Tue, 18 Sep 2001, Patrick M Doane wrote:
> I have some code that would like to use polymorphic type abbreviations
> along with labels. It seems to be not behaving quite like I expected.
> What could I do to make this shorter:
>
> type a = [ `A ]
>
> let f ~a:(#a as a) = ...
>
> I was hoping that I could use this:
>
> let f ~a:#a = ...
you should write :
let f ~a : #a = ...
the problem is that #a is both a type expression and a pattern, and in
your expression, it's a pattern. For example if you write :
let f ~a:int = int
the int is not a type expression !
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next prev parent reply other threads:[~2001-09-19 8:01 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-18 22:48 Patrick M Doane
2001-09-19 0:05 ` Patrick M Doane
2001-09-19 8:37 ` Laurent Vibert
2001-09-19 8:56 ` Remi VANICAT
2001-09-19 8:01 ` Laurent Vibert [this message]
2001-09-19 16:35 ` Patrick M Doane
2001-09-19 12:45 ` Jacques Garrigue
2001-09-19 16:58 ` Patrick M Doane
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