From -4704397352987278001 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f78e5,94948bbb031f36b X-Google-Attributes: gidf78e5,public X-Google-ArrivalTime: 2002-09-23 09:22:47 PST Path: archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!kibo.news.demon.net!mutlu.news.demon.net!demon!mail2news.demon.co.uk!devnull From: kuyper@wizard.net ("James Russell Kuyper Jr.") Newsgroups: comp.std.c++ Subject: Re: how to define a template function with a templatized parameter Date: Mon, 23 Sep 2002 16:22:47 +0000 (UTC) Organization: Not Enough Lines: 38 Approved: fjh@cs.mu.oz.au (Fergus Henderson , moderator of comp.std.c++) Message-ID: <3D8EF2C5.20BC0EAB@wizard.net> References: <3D8D2E06.9D30B9D@optech.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Trace: mail2news.demon.co.uk 1032798167 29240 10.0.0.1 (23 Sep 2002 16:22:47 GMT) X-Complaints-To: abuse@demon.net NNTP-Posting-Date: Mon, 23 Sep 2002 16:22:47 +0000 (UTC) X-Received: from mulga.cs.mu.oz.au ([128.250.1.22]) by news.demon.co.uk with esmtp (Exim 4.05) id 17tVyv-0007aM-00 for mail2news@news.news.demon.net; Mon, 23 Sep 2002 16:22:46 +0000 X-Received: from localhost (localhost [[UNIX: localhost]]) by mulga.cs.mu.OZ.AU id CAA06097; Tue, 24 Sep 2002 02:19:13 +1000 (EST) X-Authentication-Warning: mulga.cs.mu.OZ.AU: fjh set sender to devnull@stump.algebra.com using -f X-Path: comp-std-cpp-robomod!not-for-mail X-Robomod: STUMP, ichudov@algebra.com (Igor Chudov) X-Delivered-To: std-c++@ncar.ucar.edu X-Accept-Language: en, es, de, ru X-Newsgroups: comp.std.c++ X-GC-Trace: gv1-PclqvVTzSVxd8715av/sLOY8oL/MP1q+1V8t40oxfAl50XMNkg= X-NNTP-Posting-Date: Mon, 23 Sep 2002 05:53:38 CDT X-DMCA-Notifications: http://www.giganews.com/info/dmca.html X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.1 Xref: archiver1.google.com comp.std.c++:14136 john wrote: > > Can someone tell if it is possible and if so how to declare a template > function that has a template > parameter that is an instance of a template class. I would like to > create a function that would > take a container class and a type as specified template types. Whether > this is is efficient, good > form, impractical or not I am not concerned. I am just interested in > whether it can be done and > if so how. > > I tried something simple like > > template void foo( C & cont); That syntax recognises C only as a class, not as a template, so C isn't legal syntax. > or > template < template class C> > void foo ( C& cont); The problem with that syntax is that the T isn't itself a template parameter; it's purely a place holder, like the 'd' in the following declaration: void bar(void (*f)(double d) ); Try this instead: template < template class C, class T> void foo(C & const); --- [ 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://www.jamesd.demon.co.uk/csc/faq.html ]