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=-0.8 required=5.0 tests=BAYES_00,INVALID_DATE autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,deafd6d94d731fd3 X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 1994-11-20 16:12:48 PST Path: nntp.gmd.de!newsserver.jvnc.net!howland.reston.ans.net!swrinde!ihnp4.ucsd.edu!network.ucsd.edu!mbk From: mbk@inls1.ucsd.edu (Matt Kennel) Newsgroups: comp.lang.ada Subject: Re: "Beaujolais Effect" -- what is it? Date: 20 Nov 1994 23:15:25 GMT Organization: Institute For Nonlinear Science, UCSD Message-ID: <3aolad$hjo@network.ucsd.edu> References: NNTP-Posting-Host: lyapunov.ucsd.edu X-Newsreader: TIN [version 1.1 PL8] Date: 1994-11-20T23:15:25+00:00 List-Id: Jean D. Ichbiah (ichbiah@jdi.tiac.net) wrote: : eachus@spectre.mitre.org (Robert I. Eachus) writes: : > I'll take a shot. Jean Ichbiah offered a bottle of Beaujolais to : > the first person to find an Ada 83 program where adding a use clause : > changed the meaning of the program without changing the legality. : Correct. : It is worth pointing that many popular languages have Beaujolais : effect: Borland Pascal "uses" clause, which takes and additive, : layer-after-layer, interpretation of what you see in the used packages : (units) definitely exhibits a Beaujolais effect. : Last time I looked at C++, my impression was that several years : of Beaujolais vintage productions would be required. : For a component-based software development, such effects are undesirable : since your application may start not working when you recompile : it with the new - supposedly improved - version of a component. Question, does Eiffel or Sather have this effect? Not knowing exactly the problem or Ada too well I am in no position to answer. : Jean D. Ichbiah -- -Matt Kennel mbk@inls1.ucsd.edu -Institute for Nonlinear Science, University of California, San Diego -*** AD: Archive for nonlinear dynamics papers & programs: FTP to -*** lyapunov.ucsd.edu, username "anonymous".