From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!mx02.eternal-september.org!.POSTED!not-for-mail From: "J-P. Rosen" Newsgroups: comp.lang.ada Subject: Re: Multiple procedures in the same adb file? Date: Mon, 12 Jan 2015 10:01:28 +0100 Organization: A noiseless patient Spider Message-ID: References: <5fc3a42d-f922-4e34-ab30-59613b980fb6@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Injection-Date: Mon, 12 Jan 2015 09:01:01 +0000 (UTC) Injection-Info: mx02.eternal-september.org; posting-host="23dab0694e4174fdc880833ec67fa650"; logging-data="29475"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+azACb2OQ21m25OgrmVeQD" User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 In-Reply-To: Cancel-Lock: sha1:y8tVJQfLyRTt8jz0nmTDFUvth8s= Xref: news.eternal-september.org comp.lang.ada:24546 Date: 2015-01-12T10:01:28+01:00 List-Id: Le 12/01/2015 01:53, Robert A Duff a écrit : > This happened to me: Existing code: > > function Some_Root_Package.Some_Function(...) return String; > > Now I happen to know that it always returns String(1..20). > And returning known-length strings is more efficient, > and this one is a bottleneck, so it's worth changing to > something like: > > subtype String_20 is String(1..20); > function Some_Function(...) return String_20; > > But that doesn't work without adding a new package, which breaks > compatibility. And this was a widely-used library, so I couldn't do > that. And String_20 really doesn't belong in Some_Root_Package, > nor anywhere else than the package that Some_Function is (directly) in > (which didn't exist!). Put the function in a package, and declare Some_Function as: function Some_Function (...) renames New_Package.Some_Function; (For compatibility, new programs would use directly the function in the package). -- J-P. Rosen Adalog 2 rue du Docteur Lombard, 92441 Issy-les-Moulineaux CEDEX Tel: +33 1 45 29 21 52, Fax: +33 1 45 29 25 00 http://www.adalog.fr