From: Karl Zilles <zilles@1969.ws>
To: skaller@ozemail.com.au
Cc: Oleg Trott <oleg_trott@columbia.edu>, caml-list@inria.fr
Subject: Re: [Caml-list] tpyping question
Date: Sun, 10 Aug 2003 22:18:18 -0700 [thread overview]
Message-ID: <3F37271A.60005@1969.ws> (raw)
In-Reply-To: <1060576786.9476.31.camel@localhost.localdomain>
skaller wrote:
> BTW: something I've needed is like this:
>
> type [`A of int * int | `B of int]
> let f x = match x with
> | `A (i,j)
> | `B i with j=0 -> ....
> (* ******** *)
>
> At the moment, I have to code this as:
>
> let f x =
> let g i j = ... in
> match x with
> | `A (i,j) -> g i j
> | `B i -> g i 0
>
> delocalising the case handling code.
>
Wouldn't it be more natural to write:
let f x =
let (i,j) = match x with
| `A v -> v
| `B u -> (u,0) in
...
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next prev parent reply other threads:[~2003-08-11 5:16 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-11 1:13 skaller
2003-08-11 2:46 ` Jacques Garrigue
2003-08-11 4:30 ` skaller
2003-08-12 3:24 ` Jacques Garrigue
2003-08-11 2:51 ` Oleg Trott
2003-08-11 4:39 ` skaller
2003-08-11 5:18 ` Karl Zilles [this message]
2003-08-11 18:13 ` Karl Zilles
2003-08-11 18:16 ` skaller
2003-08-11 19:02 ` Remi Vanicat
2003-08-12 4:25 ` skaller
2003-08-11 19:02 ` Tiphaine Turpin
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