MESSAGE
| DATE | 2011-06-05 |
| FROM | Ruben Safir
|
| SUBJECT | Subject: [NYLXS - HANGOUT] (fwd) Re: Anonymous namespace
|
-- forwarded message --
Path: reader1.panix.com!panix!bloom-beacon.mit.edu!micro-heart-of-gold.mit.edu!nntp.club.cc.cmu.edu!feeder.erje.net!eternal-september.org!feeder.eternal-september.org!.POSTED!not-for-mail
From: Victor Bazarov
Newsgroups: comp.lang.c++
Subject: Re: Anonymous namespace
Date: Fri, 03 Jun 2011 09:44:29 -0400
Organization: A noiseless patient Spider
Lines: 20
Message-ID:
References: <03464db0-e118-463c-9834-171dab457e42-at-h9g2000yqk.googlegroups.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Date: Fri, 3 Jun 2011 13:44:30 +0000 (UTC)
Injection-Info: mx04.eternal-september.org; posting-host="mfoyPVXLF0MtM1ZkAsRgyQ";
logging-data="22668"; mail-complaints-to="abuse-at-eternal-september.org"; posting-account="U2FsdGVkX1/ld1vdKrwNO8VXsc0DWoyN1pYknQk3LVw="
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.17) Gecko/20110414 Thunderbird/3.1.10
In-Reply-To: <03464db0-e118-463c-9834-171dab457e42-at-h9g2000yqk.googlegroups.com>
Cancel-Lock: sha1:1tJdgbnJLXLDLsPO8FFaLAFSWmo=
Xref: panix comp.lang.c++:1085973
On 6/3/2011 4:08 AM, gwowen wrote:
> On Jun 3, 3:54 am, r...-at-zedat.fu-berlin.de (Stefan Ram) wrote:
>>> What is the point of the anonymous namespace.
>>
>> Names can be hidden from the linker (from other translation
>> units), even if they should have external linkage.
>
> Can someone give the benefits of external-but-unlinkable anon-
> namespace variables (or functions) against old-school internal linkage
> file-scope "static" variables and functions.
The Standard prohibits the use of names with no linkage or names with
internal linkage as template arguments. Only objects with external
linkage are allowed. Hence you can't use a function declared 'static'
or a local type as a predicate in 'std::sort', for instance, or as the
functor in 'std::for_each', and so on.
V
--
I do not respond to top-posted replies, please don't ask
-- end of forwarded message --
|
|
