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!news.eternal-september.org!news.eternal-september.org!feeder.eternal-september.org!news.lightlink.com!aioe.org!news.etla.org!nntp-feed.chiark.greenend.org.uk!ewrotcd!reality.xs3.de!news.jacob-sparre.dk!loke.jacob-sparre.dk!pnx.dk!.POSTED!not-for-mail From: "Randy Brukardt" Newsgroups: comp.lang.ada Subject: Re: ANN: Kickstarter for beginning work on a new open-source Compiler Date: Thu, 20 Mar 2014 18:04:29 -0500 Organization: Jacob Sparre Andersen Research & Innovation Message-ID: References: <5151491a-14c3-4138-bcb5-f29108aeefb9@googlegroups.com> <8uHWu.228$ui6.50@fx27.iad> NNTP-Posting-Host: static-69-95-181-76.mad.choiceone.net X-Trace: loke.gir.dk 1395356671 16352 69.95.181.76 (20 Mar 2014 23:04:31 GMT) X-Complaints-To: news@jacob-sparre.dk NNTP-Posting-Date: Thu, 20 Mar 2014 23:04:31 +0000 (UTC) X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.5931 X-RFC2646: Format=Flowed; Response X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 Xref: news.eternal-september.org comp.lang.ada:18887 Date: 2014-03-20T18:04:29-05:00 List-Id: "Shark8" wrote in message news:8uHWu.228$ui6.50@fx27.iad... > On 19-Mar-14 15:03, Randy Brukardt wrote: ... >> For one thing, if you're at all successful, you'll be stuck there for >> the >> rest of your working life. And to get far enough to be at all successful, >> you'll have to figure out how to deal with lovely things like resolution, >> visibility, and tyranny of interfaces. > > Visibility is an important thing, as is resolution -- though maybe they > are more on the complex side of things than we'd like. > > With the "tyranny of interfaces" do you mean in-general like like a > generic's formal parameters and a subprogram's signature? Or do you mean > the construct of the 'interface' keyword? The interface construct itself. The issues with actually implementing multi-dispatching are quite daunting, especially given the other requirements of Ada. It clearly can be done; whether I could actually do it is a much more interesting question (particularly without abandoning other properties of our implementation). Randy.