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 TAA03045; Fri, 29 Nov 2002 19:29:49 +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 TAA03164 for ; Fri, 29 Nov 2002 19:29:49 +0100 (MET) Received: from pauillac.inria.fr (pauillac.inria.fr [128.93.11.35]) by concorde.inria.fr (8.11.1/8.11.1) with ESMTP id gATITlX08895; Fri, 29 Nov 2002 19:29:47 +0100 (MET) Received: (from weis@localhost) by pauillac.inria.fr (8.7.6/8.7.3) id TAA02756; Fri, 29 Nov 2002 19:29:47 +0100 (MET) From: Pierre Weis Message-Id: <200211291829.TAA02756@pauillac.inria.fr> Subject: Re: [Caml-list] small exercise In-Reply-To: <20021129162957.C27468@pauillac.inria.fr> from Xavier Leroy at "Nov 29, 102 04:29:57 pm" To: xavier.leroy@inria.fr (Xavier Leroy) Date: Fri, 29 Nov 2002 19:29:47 +0100 (MET) Cc: altavillasalvatore@libero.it, caml-list@inria.fr X-Mailer: ELM [version 2.4ME+ PL28 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-caml-list@pauillac.inria.fr Precedence: bulk > > input: string "1.15.120.13.43.35.340.190.0" > > output: int array= [| 1; 15; 120; 13; 43; 35; 340; 190; 0; |] > > That's easy: > > let answer_to_the_exercise = function > "1.15.120.13.43.35.340.190.0" -> > [| 1; 15; 120; 13; 43; 35; 340; 190; 0; |] > > I'm sure your professor will love this solution, as it is not only > correct w.r.t. the specification, but also quite concise. As a long time Caml teacher, I would prefer this one :) let answer_to_the_exercise = function | "1.15.120.13.43.35.340.190.0" -> | 1; 15; 120; 13; 43; 35; 340; 190; 0; |] | _ -> assert false;; Never show a student a non exhaustive pattern matching :) Pierre Weis INRIA, Projet Cristal, Pierre.Weis@inria.fr, http://pauillac.inria.fr/~weis/ ------------------- 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