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!feeder.eternal-september.org!aioe.org!.POSTED!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: Preventing private procedure visibility being made public through extension Date: Sun, 21 May 2017 14:53:09 +0200 Organization: Aioe.org NNTP Server Message-ID: References: <4a47e4cd-829c-4451-abf1-82cf60b67706@googlegroups.com> NNTP-Posting-Host: BYuA7L7MRjuLLjcoGHOBxw.user.gioia.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-Complaints-To: abuse@aioe.org User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.1.1 X-Notice: Filtered by postfilter v. 0.8.2 Content-Language: en-US Xref: news.eternal-september.org comp.lang.ada:46836 Date: 2017-05-21T14:53:09+02:00 List-Id: On 2017-05-21 14:19, J-P. Rosen wrote: > Le 21/05/2017 à 10:44, Dmitry A. Kazakov a écrit : >> If Ada supported return by-reference (it existed once in a rudimentary >> form and was removed in Ada 2005) > More precisely: an implicit, hard to understand return by reference was > replaced with an explicit one. If you want return by reference, have a > function that returns "access T". Well, anonymous access is not same as reference. 1. It lacks implicit dereferencing 2. It overrides assignment operation of T with its own, which never should be there in first place 3. It does not transfer the access mode to T. E.g. the out mode of a reference to T applies to T itself". For an access type it applies to the type access T. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de