From 3887353371090506793 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f78e5,b83a4267f4ac775 X-Google-Attributes: gidf78e5,public From: Matt Austern Subject: Re: string/cow/algorithm Date: 1998/08/11 Message-ID: #1/1 X-Deja-AN: 380207553 X-NNTP-Posting-Host: isolde.engr.sgi.com Approved: stephen.clamage@sun.com (comp.std.c++) Sender: austern@isolde.engr.sgi.com References: <6qfr41$oue$1@pigpen.csrlink.net> <6qg3ld$r7o$1@shell7.ba.best.com> <6qgs0r$92e$1@pigpen.csrlink.net> <35ccc2b4.832003@news3.ibm.net> <6qn19u$sb0$1@pigpen.csrlink.net> <6qnj99$h2l$1@nnrp1.dejanews.com> <6qo3fq$dum$1@pigpen.csrlink.net> <6qq9ai$59e$1@nnrp1.dejanews.com> X-UID: 0000000001 X-Status: $$$T Organization: SGI Newsgroups: comp.std.c++ Originator: clamage@taumet AllanW@my-dejanews.com writes: > > Sorry. Unless this has also changed from the CD2, it is required that > > string::operator[] return a T& and that string::iterator::operator* > > return a T&. Proxies are expressly forbidden by these requirements. > > That's a pity. It would be invisible to most code. It's more visible than you might think: It's very hard to get proxy references to work correctly with template functions whose arguments are passed by reference. You wind up with a reference to a proxy, and that sometimes has unexpected consequences. [ 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 ]