   Namespace question
  If I write using namespace blah; in one .h-file and include that file in another file, does that give the effect of having "using namespace blah;" within that second file, or does the parser behave as if the second file doesn't contain any "using namespace blah"?   
  "using" will apply to everything in its scope. So if you have that statement globally in a header file then it will apply to everything that includes it. Thats why you should keep things like that in the most specific scope possible.   ;  ok thanks   