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From: Selentek 24331-03 <epifanov@komset.ru>
To: caml-list@inria.fr
Subject: [Caml-list] optional arguments
Date: Mon, 17 Nov 2003 11:52:49 +0300	[thread overview]
Message-ID: <20031117085249.GA11793@inv_machine> (raw)

Hello,

Is there any way to "send optional argument with None value".
for example:

let a = None;;
val a : 'a option = None

let f ?v () =
  match v with
  | Some i -> i + 1
  | None   -> 0

.

First solution:

match a with
| Some i -> f ~v:i ()
| None   -> f ()

Can I find something more easy with out redifinition of the function ?
something like: f a (), but funtion defined by ``let f ?v'' and ``a'' is int option.


Thanks.

Sorry for my english.
-- 

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             reply	other threads:[~2003-11-17  9:03 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-11-17  8:52 Selentek 24331-03 [this message]
2003-11-17 10:13 ` Richard Jones
2003-11-17 10:44   ` Selentek 24331-03
2003-11-17 10:13 ` Artem Prisyznuk
2003-11-17 17:24 ` Brian Hurt
2008-11-09 19:17 Optional arguments malc
2008-11-09 19:51 ` [Caml-list] " David Teller
2008-11-10 20:52   ` malc

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