From: Sebastien Ferre <Sebastien.Ferre@irisa.fr>
To: caml-list@inria.fr
Subject: Re: [Caml-list] is there a more concise way to write this?
Date: Fri, 20 Jan 2012 09:37:17 +0100 [thread overview]
Message-ID: <4F1927BD.9040507@irisa.fr> (raw)
In-Reply-To: <CAC1A9D40NusKirW7DEQbzuhtXvuVwqX7VBR6v6trJ1JjbPO2Bg@mail.gmail.com>
Hi,
On 01/20/2012 07:46 AM, Valentin ROBERT wrote:
> I guess you can write it like:
>
> let a = (if out then [o] else []) @ (if value then [v] else [])
>
> But it's not particularly more pleasant to the eye.
> Still it reduces the exponential explosion of the code, at a small
> additional cost (the @), I believe.
You can make it even more concise by defining a helping function.
let b2l b x = if b then [x] else [];;
let a =
b2l out o @
b2l value v;;
This easily generalizes to an arbitrary number of boolean variables.
---
Sébastien Ferré
next prev parent reply other threads:[~2012-01-20 8:37 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-20 6:38 Martin DeMello
2012-01-20 6:46 ` Valentin ROBERT
2012-01-20 6:58 ` Martin DeMello
2012-01-20 8:37 ` David Allsopp
2012-01-20 13:29 ` Edgar Friendly
2012-01-20 13:50 ` Fabrice Le Fessant
2012-01-20 13:58 ` oliver
2012-01-20 14:05 ` Edgar Friendly
2012-01-20 14:12 ` David Allsopp
2012-01-20 14:23 ` Fabrice Le Fessant
2012-01-20 14:23 ` Edgar Friendly
2012-01-20 8:37 ` Sebastien Ferre [this message]
2012-01-20 9:11 ` Jerome Vouillon
2012-01-20 9:34 ` Fabrice Le Fessant
2012-01-20 10:27 ` Arnaud Spiwack
2012-01-20 8:52 ` Lin
2012-01-20 9:08 ` Valentin ROBERT
2012-01-20 9:19 ` Lin
2012-01-20 10:21 ` Martin DeMello
2012-01-20 9:38 ` oliver
2012-01-20 13:59 ` Edgar Friendly
2012-01-20 14:42 ` oliver
2012-01-20 15:31 ` Fabrice Le Fessant
2012-01-20 21:04 ` oliver
2012-01-20 21:09 ` oliver
2012-01-20 20:40 ` oliver
2012-01-20 21:07 ` Martin DeMello
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