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Groups > comp.lang.c++ > #3443
| From | Ruben Safir <ruben@mrbrklyn.com> |
|---|---|
| Newsgroups | comp.lang.c++ |
| Subject | Re: templated operator()<< |
| Date | 2011-04-12 02:43 +0000 |
| Organization | PANIX Public Access Internet and UNIX, NYC |
| Message-ID | <io0e7q$qsv$3@reader1.panix.com> (permalink) |
| References | <io03f9$qsv$1@reader1.panix.com> <io06co$fgm$1@dont-email.me> <io0bl5$9hr$1@reader1.panix.com> <io0bpn$dph$2@dont-email.me> |
On Tue, 12 Apr 2011 04:01:25 +0200, Alf P. Steinbach /Usenet wrote: > * Ruben Safir, on 12.04.2011 03:59: >> On Tue, 12 Apr 2011 02:29:10 +0200, Alf P. Steinbach /Usenet wrote: >> >>> * Ruben Safir, on 12.04.2011 01:39: >>>> as I understand things, the operator<<() needs to be external as to >>>> the class and then declared as a friend of the class. I'm not sure >>>> if I understand why that is the case. >>> >>> >> >> what?? operator<<() can be a normal class member? > > Yes. > > > Cheers & hth., > > - Alf http://en.wikibooks.org/wiki/C++_Programming/Operators/Operator_Overloading#Operators_as_member_functions Of special mention are the shift operators, << and >>. These have been overloaded in the standard library for interaction with streams. When overloading these operators to work with streams the rules below should be followed: 1. overload << and >> as friends (so that it can access the private variables with the stream be passed in by references 2. (input/output modifies the stream, and copying is not allowed) 3. the operator should return a reference to the stream it receives (to allow chaining, cout << 3 << 4 << 5)
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templated operator()<< Ruben Safir <ruben@mrbrklyn.com> - 2011-04-11 23:39 +0000
Re: templated operator()<< LR <lruss@superlink.net> - 2011-04-11 20:07 -0400
Re: templated operator()<< "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-12 02:29 +0200
Re: templated operator()<< Ruben Safir <ruben@mrbrklyn.com> - 2011-04-12 01:59 +0000
Re: templated operator()<< "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-12 04:01 +0200
Re: templated operator()<< Ruben Safir <ruben@mrbrklyn.com> - 2011-04-12 02:37 +0000
Re: templated operator()<< Ruben Safir <ruben@mrbrklyn.com> - 2011-04-12 02:43 +0000
Re: templated operator()<< "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-12 05:25 +0200
Re: templated operator()<< Michael Doubez <michael.doubez@free.fr> - 2011-04-12 00:17 -0700
Re: templated operator()<< Kai-Uwe Bux <jkherciueh@gmx.net> - 2011-04-12 08:23 +0200
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