From: oliver <oliver@first.in-berlin.de>
To: Edgar Friendly <thelema314@gmail.com>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] is there a more concise way to write this?
Date: Fri, 20 Jan 2012 22:09:13 +0100 [thread overview]
Message-ID: <20120120210913.GA2310@siouxsie> (raw)
In-Reply-To: <20120120210430.GA2188@siouxsie>
On Fri, Jan 20, 2012 at 10:04:30PM +0100, oliver wrote:
>
> My fold approach version:
>
> let folded (out, value) o v =
> let a = if out then Some o else None in
> let b = if value then Some v else None in
> List.fold_left ( fun accum elem -> match elem with None -> accum | Some x -> x :: accum ) [] [ b; a ]
>
> or when following the way the other functions are notated
> (o and v not as parameters but in the environment) so that
> you can paste it into your code:
>
>
> let folded_env (out, value) =
> let a = if out then Some o else None in
> let b = if value then Some v else None in
> List.fold_left ( fun accum elem -> match elem with None -> accum | Some x -> x :: accum ) [] [ b; a ]
>
> If
> let ... = ... in let ... = ... in ...
> is slower than than
> let ... = ... and let ... = ... in ...
[...]
meanI t:
If
let ... = ... in let ... = ... in ...
is slower than than
let ... = ... and ... = ... in ...
of course.
(copy & paste-related typo)
Ciao,
Oliver
next prev parent reply other threads:[~2012-01-20 21:09 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
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 [this message]
2012-01-20 20:40 ` oliver
2012-01-20 21:07 ` Martin DeMello
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