[boost] Re: Re: BOOST_STD_EXTENSION_NAMESPACE and dinkumware stdlib313

From: Jonathan Turkanis (technews_at_[hidden])
Date: 2004-01-26 18:38:18

"Reece Dunn" <msclrhd_at_[hidden]> wrote in message:

> >
> >If Dinkumware has made this change uniformly in its various
> >distributions, it sounds like BOOST_STD_EXTENSION_NAMESPACE should
be
> >defined to be stdext in boost/config/stdlib/dinkumware.hpp if
> >_CPPLIB_VER is a certain value or higher (313?).
>
> I have done a little digging:
>
>
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcstdlib/html/vclrfhashmap_class.asp
> says:
>
>    "In Visual C++ .NET 2003, members of the <hash_map> and
>    <hash_set> header files are no longer in the std namespace,
>    but rather have been moved into the stdext namespace."
>
> Also, the online Dinkumware reference
> (http://www.dinkumware.com/manuals/reader.aspx?b=p/&h=hash_map.html)
places
> hash_xxx in the std namespace. Therefore, it is specific to VC7.1
(unless
> Intel has done something similar?).

That's interesting. Since the compiler is determined before the
standard library, it would still be possible to put the definition in
boost/config/stdlib/dinkumware.hpp, like so

    #if defined(BOOST_MSVC) && (BOOST_MSVC >= 1310)
        #define BOOST_STD_EXTENSION_NAMESPACE stdext
    #endif

Maybe one should check _CPPLIB_VER for good measure. This sounds
reasonable. What do you think?

Jonathan