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: 103376,54aae3da1cf935cd X-Google-Attributes: gid103376,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news1.google.com!news2.google.com!proxad.net!fr.ip.ndsoftware.net!newsfeed00.sul.t-online.de!t-online.de!inka.de!rz.uni-karlsruhe.de!news.uni-stuttgart.de!news.belwue.de!LF.net!news.enyo.de!not-for-mail From: Florian Weimer Newsgroups: comp.lang.ada Subject: Re: Ada Singleton Pattern Date: Tue, 14 Sep 2004 17:04:17 +0200 Message-ID: <87wtywgadq.fsf@deneb.enyo.de> References: <%Fi1d.245967$OR2.11136154@news3.tin.it> <14p6ezf3vze8j$.j05arkr066wi.dlg@40tude.net> <87llfdgcdf.fsf@deneb.enyo.de> <1sggrr7wk1p1l$.3c2vsu0kl9qo.dlg@40tude.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: albireo.enyo.de 1095174258 14651 212.9.189.171 (14 Sep 2004 15:04:18 GMT) X-Complaints-To: Cancel-Lock: sha1:nquGkFBM1S6SvYblI4lpAP6AFYM= Xref: g2news1.google.com comp.lang.ada:3722 Date: 2004-09-14T17:04:17+02:00 List-Id: * Dmitry A. Kazakov: > Only if the scope of the singleton is unknown, and so need to be dynamic. > But it is not the case for the example given. The scope of the singleton is > one of the package. The package itself can be nested (not to be at the > library level). So clients are prevented from accessing it after its > finalization by the compiler. Oh, come on, you should be able to abstract a bit from the concrete code you gave. 8-) Often, singletons are used to manage external resources, and some cleanup operation is required.