Toralf Lund wrote:
>
> On egcs-c++-1.1.2-24 under Linux, it is globally visible, while it is
> declared within the "std" name space on IRIX/MipsPro C++. Which one is
> correct.

Almost everything in the C++ standard library is declared in namespace
std, and not in the global namespace. The exceptions are the various
forms of operator new and delete, and the declarations inherited from
C when you use the C form of the C standard headers.  (That is,
if you include <stdio.h>, the declarations in that header are available
in the global namespace. If you include <cstdio> instead, the
declarations of types, objects, and functions are available only
in namespace std.)

>
> Actually, egcs has an "std" name space at all,

Assuming you meant to day "has no std namespace", that is the
explanation. It takes a while for all the standard features to
get incorporated into a C++ implementation. Evidently that version
of g++ is not up to date regarding namespaces.

--
Steve Clamage, stephen.clamage@sun.com



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Toralf Lund wrote:
>
> On egcs-c++-1.1.2-24 under Linux, it is globally visible, while it is
> declared within the "std" name space on IRIX/MipsPro C++. Which one is
> correct.

Before namespaces were introduced, string (and others) were globally
visible; by the current standard they're in namespace std. So, the
latter follows the current standard and the former does not.

 AriL
--
Pain and disappointment are inevitable. Misery is optional.
Homepaged at http://www.angelfire.com/or/lukumies



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The STL and string belong under the std namespace. G++ is catching up in
this respect, but is making great headway with their stdc++ efforts. You can
prefix all your strings, vectors with std:: as 'std' is #defined to be the
null string in g++. 'using namespace std' is also accepted in g++.

TIP: don't #define __STL_NO_NAMESPACES in your code -- this is used by the
particular implementation of the STL to help it compile on all platforms and
compilers. You should instead use 'using namespace std'.

Cheerio,
Jason




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On egcs-c++-1.1.2-24 under Linux, it is globally visible, while it is
declared within the "std" name space on IRIX/MipsPro C++. Which one is
correct.

Actually, egcs has an "std" name space at all, while it can be disabled
by defining the macro __STL_NO_NAMESPACES on IRIX. Can someone please
explain a bit more about name spaces in the context of STL and the
standard C++ library?
--
Toralf Lund <toralf@kscanners.no>   +47 66 85 51 22
Kongsberg Scanners AS               +47 66 85 51 00 (switchboard)
http://www.kscanners.no/~toralf     +47 66 85 51 01 (fax)



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