Definition of constant within namespace in cpp file

Question

I\'ve approached this strange ( for me ) effect in VS 2010. Can anyone smart shed some light on it please.

//Header.h
#include 
namespace MySpa         


        

Answer 1

The whole point of namespaces is that names in a particular namespace are independent of names outside that namespace. A program could have both a MySpace::SOME_CONST_STRING and a global ::SOME_CONST_STRING, and these are two completely unrelated symbols. It would be wrong for the linker to use a definition of one to satisfy a reference to the other.

When you define a variable, you have to define it in the namespace where you want it to be.