From: Olivier Andrieu <andrieu@ijm.jussieu.fr>
To: Mike Potanin <potanin@mccme.ru>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] AST and "when"
Date: Wed, 29 Jan 2003 15:33:44 +0100 [thread overview]
Message-ID: <15927.58952.223959.906400@akasha.ijm.jussieu.fr> (raw)
In-Reply-To: <Pine.LNX.4.44.0301291416260.17617-100000@mccme.ru>
Mike Potanin [Wednesday 29 January 2003] :
> Can CamlP4 make "when" in pattern?
>
> # <:expr< let p x = match x with a when a<0 -> 1 | b -> b in p z >>;;
> ^^^^
> While expanding quotation "expr":
> Parse error: '->' expected after [ipatt] (in [expression])
That should be :
<:expr< let p x = match x with [ a when a<0 -> 1 | b -> b ] in p z >>
AST quotations use the revised syntax.
--
Olivier
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next prev parent reply other threads:[~2003-01-29 14:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-29 11:20 Mike Potanin
2003-01-29 14:33 ` Olivier Andrieu [this message]
2003-01-29 15:33 ` Mike Potanin
2003-01-29 15:43 ` Olivier Andrieu
2003-01-29 16:51 ` Mike Potanin
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