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,e4042699db4db63b X-Google-Attributes: gid103376,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news2.google.com!news1.google.com!npeer02.iad.highwinds-media.com!news.highwinds-media.com!feed-me.highwinds-media.com!nntp.club.cc.cmu.edu!feeder.erje.net!newsfeed.straub-nv.de!nuzba.szn.dk!news.jacob-sparre.dk!pnx.dk!not-for-mail From: Jacob Sparre Andersen Newsgroups: comp.lang.ada Subject: Re: Newbie question Date: 12 Mar 2009 16:03:31 +0100 Organization: Jacob Sparre Andersen Sender: sparre@jspa-nykredit Message-ID: <87k56u6aws.fsf@nbi.dk> References: <49b90e2d$0$2847$ba620e4c@news.skynet.be> <0ff2f139-06cf-4fa5-8c0d-f97c43a33186@s20g2000yqh.googlegroups.com> <49b9193a$0$2854$ba620e4c@news.skynet.be> NNTP-Posting-Host: 79.138.247.121.bredband.3.dk Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: munin.nbi.dk 1236870212 26571 79.138.247.121 (12 Mar 2009 15:03:32 GMT) X-Complaints-To: news@jacob-sparre.dk NNTP-Posting-Date: Thu, 12 Mar 2009 15:03:32 +0000 (UTC) User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.4 Xref: g2news2.google.com comp.lang.ada:5048 Date: 2009-03-12T16:03:31+01:00 List-Id: stefan-lucks@see-the.signature wrote: > Solution 2a: Use an enumeration: > > type Color_T is (Black, White, None); > > type Piece_T(Color: Color_T) is > record > case Color is > when White => > White_Piece: Piece_Type_T; > when Black => > Black_Piece: Piece_Type_T; > when None => > null; > end case; > end record; Solution 2b: With defaults and a common name for pieces: type Square_Colour is (Black, White, None); type Square (Colour : Square_Colour := None) is record when Black | White => Piece : Piece_Type_T; -- "Piece_Type_T" is (IMO) an ugly identifier when None => null; end record; Greetings, Jacob -- "This page inadvertently left blank."