From: "Nicolas Cannasse" <warplayer@free.fr>
To: <caml-list@inria.fr>, "Richard Jones" <rich@annexia.org>
Subject: Re: [Caml-list] Strange syntax error
Date: Sun, 23 Jan 2005 22:44:27 +0100 [thread overview]
Message-ID: <001a01c50194$b7845da0$474cfea9@warp> (raw)
In-Reply-To: <20050123211112.GA14067@furbychan.cocan.org>
> The following compiles fine:
>
> type t = { keyword : string; cost : float option; }
>
> let f =
> function
> | { keyword = keyword } when keyword.[0] = '-' -> keyword
> | { keyword = keyword; cost = None } -> keyword
> | _ -> failwith "whatever"
>
> But this, which surely is equivalent, fails with a syntax error at the
> second '|' character:
>
> type t = { keyword : string; cost : float option; }
>
> let f =
> function
> | { keyword = keyword } when keyword.[0] = '-' (* -> keyword *)
> | { keyword = keyword; cost = None } -> keyword
> | _ -> failwith "whatever"
>
> OCaml 3.08.1.
>
> Is this a parsing bug?
>
> Rich.
I guess you can't have a "when" clause between two patterns, that sounds
logical since it applies to all patterns in the same "group".
Nicolas Cannasse
next prev parent reply other threads:[~2005-01-23 21:43 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-23 21:11 Richard Jones
2005-01-23 21:44 ` Nicolas Cannasse [this message]
2005-01-23 21:49 ` [Caml-list] " Jon Harrop
2005-01-23 22:23 ` Kurt Welgehausen
2005-01-23 23:12 ` Richard Jones
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