What is the difference between a trait and a policy?

Question

I have a class whose behavior I am trying to configure.

template ServerTraits;

Then later on I h

Answer 1

If you're using ModeT, IsReentrant, and IsAsync to control the behaviour of the Server, then it's a policy.

Alternatively, if you are want a way to describe the characteristics of the server to another object, then you could define a traits class like so:

template 
class ServerTraits;

template<>
class ServerTraits
{
    enum { ModeT = SomeNamespace::MODE_NORMAL };
    static const bool IsReentrant = true;
    static const bool IsAsync = true;
}