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=1.4 required=5.0 tests=BAYES_00,FORGED_GMAIL_RCVD, FORGED_MUA_MOZILLA,FREEMAIL_FROM autolearn=no autolearn_force=no version=3.4.4 X-Google-Thread: 103376,5a88548f1bcf3510 X-Google-NewGroupId: yes X-Google-Attributes: gida07f3367d7,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Received: by 10.66.79.40 with SMTP id g8mr1210619pax.45.1353086995634; Fri, 16 Nov 2012 09:29:55 -0800 (PST) Path: s9ni19976pbb.0!nntp.google.com!Xl.tags.giganews.com!border1.nntp.dca.giganews.com!nntp.giganews.com!local2.nntp.dca.giganews.com!news.giganews.com.POSTED!not-for-mail NNTP-Posting-Date: Fri, 16 Nov 2012 11:29:55 -0600 Date: Fri, 16 Nov 2012 12:29:55 -0500 From: "Peter C. Chapin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121028 Thunderbird/16.0.2 MIME-Version: 1.0 Newsgroups: comp.lang.ada Subject: Re: Overring function and its returned type References: <97a6946f-a707-4dd3-872b-9e851fcf9462@googlegroups.com> <62ba75d8-8a6c-4d75-be37-3322f683714d@googlegroups.com> <8998c0eb-c9b1-4501-9163-94172aa4aea0@googlegroups.com> In-Reply-To: <8998c0eb-c9b1-4501-9163-94172aa4aea0@googlegroups.com> Message-ID: <_oydneWckpiO5TvN4p2dnAA@giganews.com> X-Usenet-Provider: http://www.giganews.com X-Trace: sv3-mBr+l5oHREgsIKCZd+a8f+l2tAne7cLrLfVpBq/oM4O9+qz2Q87e2WC3wdGmC1yc3IMuinC53/qLjJ6!ar9iwm6OoNhMvNDYavZKpXimDP/KUGja7MmtFj2IUZhpEhZfmswL3TrZ0hLhsfk= X-Complaints-To: abuse@giganews.com X-DMCA-Notifications: http://www.giganews.com/info/dmca.html X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 X-Original-Bytes: 1846 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Date: 2012-11-16T12:29:55-05:00 List-Id: On 11/16/2012 10:27 AM, Maciej Sobczak wrote: > An interesting property of Ada, and what makes this issue more > difficult than in C++ is that Ada supports out parameters, which from > the language design point of view should work like return values. > Covariant return types are easy to picture, but covariant out > parameters? Hm... Maybe this is where things would start to shake. Yes, interesting point about parameter modes! Peter