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 TAA02444; Tue, 3 Aug 2004 19:09:30 +0200 (MET DST) 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 TAA02678 for ; Tue, 3 Aug 2004 19:09:29 +0200 (MET DST) Received: from smtp.cegetel.net (mf00.sitadelle.com [212.94.174.77]) by concorde.inria.fr (8.12.10/8.12.10) with ESMTP id i73H9SSH026350 for ; Tue, 3 Aug 2004 19:09:28 +0200 Received: from warp (unknown [80.125.123.123]) by smtp.cegetel.net (Postfix) with SMTP id 3292667235; Tue, 3 Aug 2004 19:09:27 +0200 (CEST) Message-ID: <003c01c4797c$8475ba30$ef01a8c0@warp> From: "Nicolas Cannasse" To: , "Paul Argentoff" References: <86hdrkth3f.fsf@paul.rtelekom.ru> Subject: Re: [Caml-list] let () = Date: Tue, 3 Aug 2004 19:08:37 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1437 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 X-Miltered: at concorde with ID 410FC6C8.000 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)! X-Loop: caml-list@inria.fr X-Spam: no; 0.00; cannasse:01 warplayer:01 caml-list:01 cannasse:01 nicolas:01 nicolas:01 silly:02 unit:03 unit:03 partial:03 partial:03 let:04 let:04 mean:05 equivalent:05 Sender: owner-caml-list@pauillac.inria.fr Precedence: bulk > Hello World! > > Can anyone answer my silly question: what does "let () = bla" really mean? let () = bla is equivalent to writing bla; but is opening a block if followed by an 'in'. Here are the different forms : bla; (* warning if partial application or if returned type not unit *) ignore(bla); (* warning if partial application, ignore returned type *) let () = bla (* error if partial application or if returned type not unit *) let _ = bla (* no warning or errors !! be careful if you want to use it *) Regards, Nicolas Cannasse ------------------- 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