From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (from majordomo@localhost) by pauillac.inria.fr (8.7.6/8.7.3) id PAA17847; Mon, 2 Feb 2004 15:20:27 +0100 (MET) X-Authentication-Warning: pauillac.inria.fr: majordomo set sender to owner-caml-list@pauillac.inria.fr using -f Received: from concorde.inria.fr (concorde.inria.fr [192.93.2.39]) by pauillac.inria.fr (8.7.6/8.7.3) with ESMTP id PAA18252 for ; Mon, 2 Feb 2004 15:20:23 +0100 (MET) Received: from interferon.mpi-sb.mpg.de (mailhost.mpi-sb.mpg.de [139.19.1.1]) by concorde.inria.fr (8.11.1/8.11.1) with ESMTP id i12EKNP03365 for ; Mon, 2 Feb 2004 15:20:23 +0100 (MET) Received: from amavis by interferon.mpi-sb.mpg.de with scanned-ok (Exim 3.35 #1 (Debian)) id 1Anew3-0006Qd-00 for ; Mon, 02 Feb 2004 15:20:23 +0100 Received: from data ([139.19.90.238] helo=mpi-sb.mpg.de) by interferon.mpi-sb.mpg.de with esmtp (Exim 3.35 #1 (Debian)) id 1Anew0-0006QF-00 for ; Mon, 02 Feb 2004 15:20:20 +0100 Received: from mpiat2314 (prevosto@mpiat2314 [139.19.20.103]) by mpi-sb.mpg.de (8.12.9+Sun/8.12.9) with SMTP id i12EKKLT009976 for ; Mon, 2 Feb 2004 15:20:20 +0100 (MET) Date: Mon, 2 Feb 2004 15:20:20 +0100 From: Virgile Prevosto To: caml-list@inria.fr Subject: Re: [Caml-list] laconical input from a file for arrays and/or matrices Message-Id: <20040202152020.5bd2723f.virgile.prevosto@m4x.org> In-Reply-To: <401E2D08.3080406@stratos-ad.com> References: <401E2D08.3080406@stratos-ad.com> X-Mailer: Sylpheed version 0.9.4claws (GTK+ 1.2.10; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Virus-Scanned: by AMaViS perl-11 X-Loop: caml-list@inria.fr X-Spam: no; 0.00; virgile:01 prevosto:01 virgile:01 prevosto:01 caml-list:01 stdout:01 stdin:01 stdout:01 fragment:01 scanf:01 scanf:01 val:01 datas:01 arrays:01 ecrit:01 Sender: owner-caml-list@pauillac.inria.fr Precedence: bulk : Le lundi 02 f=E9vrier, =E0 11h57 +0100, samsaga2 a =E9crit: > let output_matirx m =3D output_value stdout m > let input_matrix () =3D input_value stdin >=20 > But no compatible with c++ files :-P >=20 > Khamenia, Valery wrote: > > here goes my usual way to input ASCII matrices from file in C++: # let x =3D Array.make_matrix 1 1 3 in output_value stdout x;; =A6=BEC - : unit =3D () I doubt that we can speak of ASCII matrices in that case ;-) Anyway, it's not so difficult to obtain a code fragment close to the C++ one, thanks to the Array and Scanf modules:=20 (* CAML version. *) let input_matrix () =3D=20 let m =3D read_int () in let n =3D read_int () in let matrix =3D Array.make_matrix m n 0. in for i =3D 0 to (m - 1) do for j =3D 0 to (n -1) do matrix.(i).(j) <- Scanf.scanf "%f " (fun x -> x) done done; matrix;; val input_matrix : unit -> float array array =3D Of course, you'll have to adapt the formatting instruction of scanf to your datas (the main problem here is that scanf expects to fins a blank after each entry, which means that your file must end with a newline or a space). --=20 E tutto per oggi, a la prossima volta Virgile ------------------- To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ Beginner's list: http://groups.yahoo.com/group/ocaml_beginners