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: 103376,243dc2fb696a49cd X-Google-Attributes: gid103376,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news1.google.com!news.glorb.com!border1.nntp.dca.giganews.com!border2.nntp.dca.giganews.com!nntp.giganews.com!elnk-atl-nf1!newsfeed.earthlink.net!stamper.news.atl.earthlink.net!newsread3.news.atl.earthlink.net.POSTED!14bb18d8!not-for-mail Sender: mheaney@MHEANEYX200 Newsgroups: comp.lang.ada Subject: Re: Ada Popularity: Comparison of Ada/Charles with C++ STL (and Perl) References: <41547dae$0$91007$39cecf19@news.twtelecom.net> From: Matthew Heaney Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sun, 26 Sep 2004 15:15:36 GMT NNTP-Posting-Host: 64.185.133.124 X-Complaints-To: abuse@earthlink.net X-Trace: newsread3.news.atl.earthlink.net 1096211736 64.185.133.124 (Sun, 26 Sep 2004 08:15:36 PDT) NNTP-Posting-Date: Sun, 26 Sep 2004 08:15:36 PDT Organization: EarthLink Inc. -- http://www.EarthLink.net Xref: g2news1.google.com comp.lang.ada:4215 Date: 2004-09-26T15:15:36+00:00 List-Id: kevin.cline@gmail.com (Kevin Cline) writes: > > One of the most frustrating things I found in Ada programming was the > inability to make user-defined types work like the built-in types. > Given > > A: array (1..10) of integer; > > then the expression A(5) is a modifiable reference to the fifth > element of A. > > After experience with C++ it was amazingly frustrating to learn that > there was no way I could define My_Container so that I could write: > > C: My_Container ; > > C(5) := 7; Indeed, you cannot do this. In AI-302 (and in Ada.Strings.*), you have to say: Replace_Element (C, Index => 5, By => 7);