From: "Richard W.M. Jones" <rich@annexia.org>
To: Basile Starynkevitch <basile@starynkevitch.net>
Cc: Walter Cazzola <cazzola@dico.unimi.it>,
OCaML Mailing List <caml-list@inria.fr>
Subject: Re: [Caml-list] pattern matching on strings
Date: Fri, 16 Sep 2011 22:20:05 +0100 [thread overview]
Message-ID: <20110916212005.GA22906@annexia.org> (raw)
In-Reply-To: <20110914224011.70c49bb251e84a4186a2b44d@starynkevitch.net>
On Wed, Sep 14, 2011 at 10:40:11PM +0200, Basile Starynkevitch wrote:
> And there is a reason why you cannot match (in Ocaml) on the content
> of strings (or arrays). It won't be easy to implement efficiently
> (you would need to copy a substring or subarray when matching)
How about just prefix matching? That on its own would be very useful.
For example in web app that was passed arguments foo_1, foo_2, bar_1,
bar_5 you could parse the arguments like this:
match arg with
| "foo_" ^ s -> (* ... *)
| "bar_" ^ s -> (* ... *)
Rich.
--
Richard Jones
Red Hat
next prev parent reply other threads:[~2011-09-16 21:20 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 [this message]
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
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