From 2784190084971944016 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f78e5,fb1a92fa405c930c X-Google-Attributes: gidf78e5,public From: James Kuyper Subject: Re: nested functions Date: 1999/06/15 Message-ID: <3763A8D5.9786D8C2@wizard.net>#1/1 X-Deja-AN: 489736432 Content-Transfer-Encoding: 7bit Approved: Fergus Henderson References: <7jd4c5$nup$1@nnrp1.deja.com> <7jjjr6$r02$1@nnrp1.deja.com> <7jma5c$i85@abyss.West.Sun.COM> <7jmdcv$a56$1@engnews1.eng.sun.com> <7jrqf5$op5$1@nnrp1.deja.com> <7jrv0r$dfq$1@engnews1.eng.sun.com> <081650426190c69CPIMSSMTPU07@email.msn.com> X-Original-Date: Sun, 13 Jun 1999 08:49:25 -0400 Content-Type: text/plain; charset=us-ascii X-Complaints-To: news@news.unimelb.edu.au X-Trace: izvestia.its.unimelb.edu.au 929427975 14370 128.250.29.16 (15 Jun 1999 06:26:15 GMT) Organization: Not Enough X-Auth: PGPMoose V1.1 PGP comp.std.c++ iQBFAgUAN2Xx9+EDnX0m9pzZAQHlzwF/YKZ2ZOMYN5wIs3bvOfxk3ITLsg1hFe2x WJysjm3+JOkG2Sh0EXeTTP0DhIhWyaJg =YCZR Mime-Version: 1.0 NNTP-Posting-Date: 15 Jun 1999 06:26:15 GMT Newsgroups: comp.std.c++ G.B. wrote: .... > The difference between local and global fiunctions is that the first can > access local variables (including parent function parameters) in the scope > where they are defined. These local variables simply do not exist when you > leave the scope, so calling local function out of it parent's scope doesn't > make sense. Just because a function is being called outside the parent's scope doesn't mean that the parent's scope has ended. In fact, that's exactly the case in one of the examples you gave: > void Container::DoSomethingToAll(/* function parameters */) > { > // local variables > void DoSomethingToOne(T& t) { /* use t, local variables and function > parameters */ } > ForEach(DoSomethingToOne); > } Therefore, the question of whether it's possible/desirable to allow local function pointers to exist and be interchangable with global function pointers is very relevant. --- [ comp.std.c++ is moderated. To submit articles, try just posting with ] [ your news-reader. If that fails, use mailto:std-c++@ncar.ucar.edu ] [ --- Please see the FAQ before posting. --- ] [ FAQ: http://reality.sgi.com/austern_mti/std-c++/faq.html ]