Article View: comp.std.c++
Article #3481Re: #ifdef XXXX
From: Yves Arrouye
Date: Mon, 19 Feb 1996 01:33
Date: Mon, 19 Feb 1996 01:33
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2101 bytes
In article <4fukhs$fc3@hermes.acs.unt.edu> johnw@jove.acs.unt.edu (John R. Williams) writes: devitto@ferndown.ate.slb.com wrote: > What about Bjarne's idea of "include" as a keyword that only has the > effect of a #include if the file has not been "include"d already. > I suppose the idea is that the compiler builds a table (like gcc does for > wrapped includes) - pretty simple really. > Ideas about why this won't work ??? Personally I'll continue to advocate "#once" to prevent multiple inclusion of a header for these reasons: So instead of adding yet another preprocessor directive, why not use Objective C's #import which does exactly that? (I know this is also a reason for *not* using it in order to make clear that the header file is a C++ one, but I don't tjink it will be sooo confusing). YA. -- Yves Arrouye | arrouye@marin.fdn.fr | http://www-scope.imag.fr/~arrouye 7, av. Leon Bollee +-----------------------+---------+------------------------ 75013 Paris | Home voice: +33 1 53 61 09 55 | Fax: +33 1 53 61 09 55 France | Please use these only between 8:00 AM and 11:00 PM, MET! --- [ comp.std.c++ is moderated. Submission address: std-c++@ncar.ucar.edu. Contact address: std-c++-request@ncar.ucar.edu. Moderation policy: http://reality.sgi.com/employees/austern_mti/std-c++/policy.html. ]
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From: arrouye@marin.fdn.fr (Yves Arrouye) Message-ID: <ARROUYE.96Feb18152057@marin.fdn.fr> X-Original-Date: 18 Feb 1996 14:20:57 GMT Path: arc1-ca.pugleaf.net!in2.uu.net!bounce-back Date: 19 Feb 96 01:33:41 GMT Approved: fjh@cs.mu.oz.au Newsgroups: comp.std.c++ Subject: Re: #ifdef XXXX Organization: Personal site References: <1996Feb1.092058.4745@iiasa.ac.at> <9602020740.22411@mulga.cs.mu.OZ.AU> <9602141406.AA16760@sparc5.ferndown.ate.slb.com> <4fukhs$fc3@hermes.acs.unt.edu> In-Reply-To: johnw@jove.acs.unt.edu's message of 15 Feb 96 12:07:00 GMT X-Auth: PGPMoose V1.1 PGP comp.std.c++ iQBFAgUBMSfTjuEDnX0m9pzZAQFLGAF/ZuIm/DJJdpC7UUmfJKrxyzotcL8cyG+5 wtrvmg9dJoe+ikjyvwepYpOnsyktuXUw =aV6q