title: When to use a namespace or a struct?
body: <p>I was just reading a little bit on them from <a href="http://www.cplusplus.com/doc/tutorial/namespaces/" rel="noreferrer">http://www.cplusplus.com/doc/tutorial/namespaces/</a>
  and it seems like a struct is capable of the same things? Or even a class for that matter. Maybe someone here can better define what a namespace is, and how it differs from a struct/class?</p>