Re: using namespace std; needed in tagdemo

[Bob Friesenhahn]

On Thu, 2 Sep 2004, Peter O'Gorman wrote:

> I decided to run "make check" on darwin with xlc++ as CXX and xlc as CC, all 
> the C tests passed fine, I guess I never tested c++ before (oops!) as tagdemo 
> fails. main.cpp and foo.cpp need a "using namespace std;" or need to change 
> cout to std::cout and endl to std::endl.
>
> Problem is that I'm not sure if/how this change will affect older compilers.
>
> Thoughts? Answers?

Compilers which do not support namespaces at all will be sunk.  GCC 
has supported namespaces for quite a while now (since the early egcs 
days) but since libstdc++ implementation lagged, it defaulted to 
making std:: the same as global scope.  That means your code would 
compile.

I have had C++ open source software deployed since 1998 and the only 
problems I encountered with namespaces is with accidentially writing 
code which did not respect them (due to primarily using GCC).

So, in my opinion, it is safe to use these standard C++ features.

Bob
======================================
Bob Friesenhahn
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http://www.simplesystems.org/users/bfriesen