From: Jon Harrop <jon@ffconsultancy.com>
To: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] Amb
Date: Sat, 10 Feb 2007 00:01:54 +0000 [thread overview]
Message-ID: <200702100001.55094.jon@ffconsultancy.com> (raw)
In-Reply-To: <45CCEDCC.1090200@janestcapital.com>
On Friday 09 February 2007 21:55, Brian Hurt wrote:
> let rec amb = function
>
> | [] -> None
> | h :: t ->
>
> let r =
> try
> Some(h ())
> with
>
> | _ -> None
>
> in
> match r with
>
> | None -> amb t
> | Some(_) as e -> e
>
> As a slightly better implementation.
I think you're trying to box the returned value in order to evade non-tail
recursion but the OPs function was actually already tail recursive because
the recursive call to "amb" occurs outside the try..with.
--
Dr Jon D Harrop, Flying Frog Consultancy Ltd.
OCaml for Scientists
http://www.ffconsultancy.com/products/ocaml_for_scientists
next prev parent reply other threads:[~2007-02-10 0:08 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-09 21:31 Amb Jonathan Bryant
2007-02-09 21:55 ` [Caml-list] Amb Brian Hurt
2007-02-09 22:12 ` Andrej Bauer
2007-02-09 22:42 ` Tom
2007-02-10 0:03 ` Jon Harrop
2007-02-10 0:01 ` Jon Harrop [this message]
2007-02-10 1:12 ` Brian Hurt
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