namespace questions

[Harvey Chapman <hchapman-gcc-help at 3gfp dot com>]

I'm creating a namespace for a bunch of related typedefs and constants  
and the following questions came up:

1. What's the meaning of "static" when used in a namespace?
2. What's the difference between "const" and "extern const" when used  
in a namespace?
3. Are there any tricks/best practices to know when using a namespace  
(defined in its own header) in multiple source files?

Thanks,

R.

// g++ -Wall namespace.cc main.cc

// The following code can also be compiled as-is in one file.

////// namespace.hh   //////
#ifndef NAMESPACE_HH
#define NAMESPACE_HH

namespace Name
{
  static const char charA = 'A';
  const char charB = 'B';
  extern const char charC;
  extern char charD;
};

#endif // NAMESPACE_HH


////// namespace.cc   //////
//#include "namespace.hh"

const char Name::charC = 'C';
char Name::charD = 'D';


////// main.cc   //////
#include <stdio.h>
//#include "namespace.hh"

int main()
{
  printf("charA = %c\n", Name::charA);
  printf("charB = %c\n", Name::charB);
  printf("charC = %c\n", Name::charC);
  printf("charD = %c\n", Name::charD);

  return(0);
}

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