From: Gabriel Kerneis <kerneis@pps.jussieu.fr>
To: Martin Jambon <martin.jambon@ens-lyon.org>
Cc: Ashish Agarwal <agarwal1975@gmail.com>, Caml List <caml-list@inria.fr>
Subject: Re: [Caml-list] use identity for default function
Date: Thu, 7 Feb 2013 21:12:58 +0100 [thread overview]
Message-ID: <20130207201258.GB28009@kerneis.info> (raw)
In-Reply-To: <51140799.3090908@ens-lyon.org>
On Thu, Feb 07, 2013 at 11:59:21AM -0800, Martin Jambon wrote:
> On 02/07/2013 11:22 AM, Ashish Agarwal wrote:
> >val foo : ?f:('a -> 'b) -> 'a -> 'b
>
> What's wrong with the following:
It does not have the requested type (for fooi).
> let foo ~f x = ...
val foo : f:('a -> 'b) -> 'a -> 'b = <fun>
> let fooi ?(f = fun x -> x) x = foo ~f x
val fooi : ?f:('a -> 'a) -> 'a -> 'a = <fun>
--
Gabriel
next prev parent reply other threads:[~2013-02-07 20:13 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-07 19:22 Ashish Agarwal
2013-02-07 19:53 ` Jeff Meister
2013-02-07 20:04 ` AW: " Gerd Stolpmann
2013-02-07 20:06 ` Gabriel Kerneis
2013-02-09 13:13 ` Goswin von Brederlow
2013-02-09 20:10 ` Jeff Meister
2013-02-07 19:59 ` Martin Jambon
2013-02-07 20:12 ` Gabriel Kerneis [this message]
2013-02-07 20:57 ` Ashish Agarwal
2013-02-08 2:47 ` Jacques Garrigue
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