From: "Alexander V.Voinov" <avv@quasar.ipa.nw.ru>
To: daniel.de_rauglaudre@inria.fr
Cc: caml-list@inria.fr
Subject: [Caml-list] a quick question on camlp4
Date: Thu, 17 Oct 2002 09:28:31 -0700 (PDT) [thread overview]
Message-ID: <20021017.092831.59477872.avv@quasar.ipa.nw.ru> (raw)
In-Reply-To: <20021017182648.G32600@verdot.inria.fr>
Hi,
For a presentation which I'm about to make, I created a
simple (normal) syntax extension to imitate Python loop
over a sequnce:
iterate <list> with <fun> which maps to List.iter <fun> <list>.
This results in examples like:
iterate [1; 2; 3; 4] with function
| 2 -> printf "two\n"
| n -> printf "%d\n"
Is it possible to eliminate the keyword 'function' from this,
that is to implement an extension like:
iterate <list> with <pat1> -> <expr1> | <pat2> -> <expr2> ...
mapping to
List.iter (function <pat1> -> <expr1> | <pat2> -> <expr2> ...) <list>.
I'm asking this just because I don't have time now to investigate
this by my own :-).
Also, I was thinking about extensions like
let sum =
fold [10; 20; 30; 40] from 0.0 with
| val, sum -> val + sum
mapping to fold_left/fold_right.
Thank you in advance
Alexander
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next prev parent reply other threads:[~2002-10-17 16:39 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-17 16:08 [Caml-list] [camlp4] compiling against Pcaml module Stefano Zacchiroli
2002-10-17 16:21 ` Daniel de Rauglaudre
2002-10-17 16:23 ` Daniel de Rauglaudre
2002-10-17 16:22 ` Samuel Lacas
2002-10-17 16:26 ` Daniel de Rauglaudre
2002-10-17 16:28 ` Alexander V.Voinov [this message]
2002-10-17 16:55 ` [Caml-list] a quick question on camlp4 Daniel de Rauglaudre
2002-10-17 17:07 ` Alexander V.Voinov
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