[cs13001] on scope of the "using" statement

[Mikhail Nesterenko]

CSI students,

On the lecture today, there was a question as to whether it was
possible to use namespaces inside functions. It turns out it is
officially possible. The rules are that statements 

   using namespace particularNamespace; // importing the whole namespace and
   using particularNamespace::ParticularVariable; // importing a single variable

Can be used either in global scope or in any of the block (including
inside functions. The variables are imported only in the block "using"
is used. For example:

   namespace myNamespace{
   	const int limit=5;
	void myFunc(int);
   }


   int main(void){
      using myNamespace::limit; // constant "limit" is only imported into main()
      for(int i=0; i < limit; ++i)
      myFunc(i);
   }


Thanks,
-- 
Mikhail