From: Philippe Strauss <philou@philou.ch>
To: caml-list@inria.fr
Subject: Re: [Caml-list] pattern matching on strings
Date: Wed, 14 Sep 2011 23:14:36 +0200 [thread overview]
Message-ID: <249BD60A-712A-4945-ADEF-A94B9C79EE82@philou.ch> (raw)
In-Reply-To: <alpine.LFD.2.00.1109142210370.2647@surtur.dico.unimi.it>
It reminds me of the micmatch/mikmatch project(s), http://martin.jambon.free.fr/micmatch.html, but never used it, only remember reading the announce on the hump or this list.
Le 14 sept. 2011 à 22:16, Walter Cazzola a écrit :
> Hi all,
> I'm just trying to write a recursive function that iterates¹ on a string
> and I'd like to use pattern matching as in:
>
> let rec iter f s =
> match s with
> | "" -> unit;
> | c^s1 -> f c; iter f s1;;
>
> but the ^ concatenates 2 strings and not a char with a string and above
> all seems to be inadmissible in the patterns.
>
> Does this mean that I can't write a function on strings by pattern
> matching or is there something I don't know?²
>
> Thanks for the help
> Walter
>
> ¹ I know that exists String.iter but I'd like to improve my skill in
> writing functions by using pattern matching
> ² I read about micmatch but I'd like to avoid non standard packages.
> --
> --
> Caml-list mailing list. Subscription management and archives:
> https://sympa-roc.inria.fr/wws/info/caml-list
> Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
> Bug reports: http://caml.inria.fr/bin/caml-bugs
>
prev parent reply other threads:[~2011-09-14 21:14 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-14 20:16 Walter Cazzola
2011-09-14 20:40 ` Basile Starynkevitch
2011-09-16 21:20 ` Richard W.M. Jones
2011-09-17 8:15 ` Basile Starynkevitch
2011-09-14 20:57 ` Philippe Veber
2011-09-14 21:44 ` Raphael Proust
2011-09-16 22:18 ` Philippe Veber
2011-09-14 21:14 ` Philippe Strauss [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=249BD60A-712A-4945-ADEF-A94B9C79EE82@philou.ch \
--to=philou@philou.ch \
--cc=caml-list@inria.fr \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).