From: Martin Jambon <martin.jambon@ens-lyon.org>
To: Ashish Agarwal <agarwal1975@gmail.com>
Cc: Caml List <caml-list@inria.fr>
Subject: Re: [Caml-list] use identity for default function
Date: Thu, 07 Feb 2013 11:59:21 -0800 [thread overview]
Message-ID: <51140799.3090908@ens-lyon.org> (raw)
In-Reply-To: <CAMu2m2Jz=HywCLqDrQAVZx9Lx+P6n7jAsRZRkbgeatUU2CAeow@mail.gmail.com>
On 02/07/2013 11:22 AM, Ashish Agarwal wrote:
> I'd like to implement
>
> val foo : ?f:('a -> 'b) -> 'a -> 'b
>
> where the default for f is identity. Is there now a way to do this with
> all the new features of OCaml?
What's wrong with the following:
let foo ~f x = ...
let fooi ?(f = fun x -> x) x = foo ~f x
Martin
next prev parent reply other threads:[~2013-02-07 19:59 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 [this message]
2013-02-07 20:12 ` Gabriel Kerneis
2013-02-07 20:57 ` Ashish Agarwal
2013-02-08 2:47 ` Jacques Garrigue
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