Re: [Boost-users] "using namespace" in template implementation files

From: Jeff Williams (jwilliams_at_[hidden])
Date: 2004-08-05 09:29:49

I think typically the solution is to just prefix std:: to everything.  Once you get used to doing it, it doesn't even seem cumbersome anymore.  (well that's my opinion at least)

> 
> From: Erik Thiele <erik_at_[hidden]>
> Date: 2004/08/05 Thu AM 09:27:10 EDT
> To: boost-users_at_[hidden]
> Subject: [Boost-users] "using namespace" in template implementation files
> 
> hi
> 
> i don't find any docs about that issue, so i ask it here:
> 
> the usual approach to work with templates and separated
> interface and implementation is as follows (i hope):
> 
> x.hpp:
> 
> template<class a> void foo(std::string xxx);
> #include "x_impl.hpp"
> 
> 
> x_impl.hpp:
> 
> template<class a> void foo(std::string xxx)
> {
>   string bla = xxx + "sdjkfh"; // <-- no std:: here !!!!
>   cout << bla;
> }
> 
> 
> 
> usually in normal non-template coding style i can do
> 
> using namespace std;
> 
> on the top of each .cpp file. but now i cannot do it, because it is
> actually in a header file and i don't want to include another namespace
> in the interface definition.
> 
> how can i solve the problem? i don't want to write "using namespace std"
> at the beginning of every template function declaration, but only once
> per implementation file.
> 
> 
> cu & thx
> erik
> 
> 
> -- 
> Erik Thiele
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