From -7438973473319289292 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f78e5,fb1a92fa405c930c X-Google-Attributes: gidf78e5,public From: source@netcom.com (David Harmon) Subject: Re: nested functions Date: 1999/06/10 Message-ID: <37dd56e1.565652003@nntp.ix.netcom.com>#1/1 X-Deja-AN: 487888485 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> X-Original-Date: Thu, 10 Jun 1999 08:10:35 GMT Content-Type: text/plain; charset=us-ascii X-Complaints-To: news@news.unimelb.edu.au X-Trace: izvestia.its.unimelb.edu.au 929018479 17424 128.250.29.16 (10 Jun 1999 12:41:19 GMT) Organization: Netcom X-NETCOM-Date: Thu Jun 10 3:02:53 AM CDT 1999 X-Auth: PGPMoose V1.1 PGP comp.std.c++ iQBFAgUAN1+yRuEDnX0m9pzZAQE9MQF9FREUmxOykTWjwo4/PVyxeBAyDH6iW/J5 kAzjcx8GPaeZdGZm0uTq4udGf1UFTVbw =2xlW Mime-Version: 1.0 NNTP-Posting-Date: 10 Jun 1999 12:41:19 GMT NNTP-Posting-User: source Newsgroups: comp.std.c++ On 9 Jun 1999 18:09:53 GMT in comp.std.c++, stanley@west.sun.com (Stanley Friesen [Contractor]) wrote: >In article <7jjjr6$r02$1@nnrp1.deja.com>, wrote: >>In article <7jd4c5$nup$1@nnrp1.deja.com>, >>1) Runtime overhead. The function calling sequence has to be >>modified to maintain a display pointer or the like. ... > >Why do local functions have to have the same calling sequence as non-local >functions? Given the C++ requirement for all functions to be declared >prior to a call, the compiler can always tell if a call is to a namespace >scope funcion or to a local one. Also, a local function can only be called from within the context of a function that knows about it. Returning a pointer to a local function would be undefined, just like returning a pointer to an auto variable. Code elsewhere needs no overhead added to the calling sequence. I want it. But when all is said and done, I don't need it. You can do everything AFAIK by passing explicit argements, and other techniques mentioned on this thread. You just lose structure. --- [ 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 ]