Re: [boost] Unnamed namespaces?

From: David Abrahams (dave_at_[hidden])
Date: 2007-06-24 15:14:21

on Sat Jun 23 2007, "Gennadiy Rozental" <gennadiy.rozental-AT-thomson.com> wrote:

> "David Abrahams" <dave_at_[hidden]> wrote in message 
> news:87vede48j6.fsf_at_grogan.peloton...
>>
>> on Sat Jun 23 2007, "Gennadiy Rozental" <gennadiy.rozental-AT-thomson.com> 
>> wrote:
>>
>>> After rereading this whole thread, I am still unclear: what is a proper 
>>> way
>>> to implement there stateless keywords?
>>
>> look at boost/parameter/keyword.hpp
>
> Will do.
>
>>> Also I believe in many other places I am using type& within unnamed
>>> namespace. This seems to be valid usage, right?
>>
>> You've left out too much detail for me to make a determination.
>
> This is essentially boost/test/trivial_singleton.hpp:
>
> #define BOOST_TEST_SINGLETON_INST( inst ) \
> namespace { BOOST_JOIN( inst, _t)& inst = BOOST_JOIN( inst, 
> _t)::instance(); }
>
> Here inst ## _t is type of singleton and inst is a reference to the
> instance

If your question is whether you are allowed to use references inside
unnamed namespaces, the answer is yes.

I note that you are still using dynamic initialization above.  Using
brace-initialization is important to avoid order-of-initialization
problems.

-- 
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com
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