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=ham autolearn_force=no version=3.4.4 X-Google-Thread: 103376,36a29c2860aff686 X-Google-NewGroupId: yes X-Google-Attributes: gida07f3367d7,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news4.google.com!feeder1.cambriumusenet.nl!feed.tweaknews.nl!194.109.133.84.MISMATCH!newsfeed.xs4all.nl!newsfeed5.news.xs4all.nl!newsfeed6.news.xs4all.nl!xs4all!news.tele.dk!news.tele.dk!small.news.tele.dk!bnewspeer01.bru.ops.eu.uu.net!bnewspeer00.bru.ops.eu.uu.net!emea.uu.net!newsfeed.arcor.de!newsspool3.arcor-online.net!news.arcor.de.POSTED!not-for-mail Date: Sat, 04 Dec 2010 14:19:28 +0100 From: Georg Bauhaus User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.13) Gecko/20101129 Thunderbird/3.1.7 MIME-Version: 1.0 Newsgroups: comp.lang.ada Subject: Re: Properties References: <3b84c8e7-1a51-4a7c-9646-119f1fc51478@s4g2000yql.googlegroups.com> <4pnv7nl4cdui$.1n28i7lqk4mek$.dlg@40tude.net> <1k7367gtebsgm$.18auo6u3nfg34.dlg@40tude.net> <083addb2-61f6-4a69-bb81-2e4fa640783b@e16g2000pri.googlegroups.com> <124c5qinlvj7c$.1pdr35p7hkp11.dlg@40tude.net> <75475874-cd6c-4e75-8a2f-7675ecf0864a@f20g2000vbc.googlegroups.com> In-Reply-To: <75475874-cd6c-4e75-8a2f-7675ecf0864a@f20g2000vbc.googlegroups.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Message-ID: <4cfa3fe0$0$7667$9b4e6d93@newsspool1.arcor-online.net> Organization: Arcor NNTP-Posting-Date: 04 Dec 2010 14:19:28 CET NNTP-Posting-Host: 7ae23dde.newsspool1.arcor-online.net X-Trace: DXC=0DB>Q`TK;:2nBOkdL^Lo7>ic==]BZ:af>4Fo<]lROoR1<`=YMgDjhg2^ho\<72OWS?PCY\c7>ejV81B2>Hd:RKW>4AeYfHXLW9; X-Complaints-To: usenet-abuse@arcor.de Xref: g2news1.google.com comp.lang.ada:15797 Date: 2010-12-04T14:19:28+01:00 List-Id: On 12/3/10 8:52 PM, Shark8 wrote: > On Dec 3, 2:05 am, "Dmitry A. Kazakov" > wrote: >>> Why not have an INTERFACE hierarchy in addition to the GUI_Object >>> hierarchy? >> >> Hmm, isn't it same? To me interface = abstract type. > > Usually they are interchangeable, but INTERFACES are the only way in > Ada to do something akin to multiple inheritance: One of the three ways to do something akin to multiple inheritance is mixin generics.