2 Apr
2004
2 Apr
'04
5:58 a.m.
So, for me it is pretty easy, traits *only* describes Model-invariant parts of Concept Features while policies furnish Models of Concepts.
Skipping all the GP stuff: traits DESCRIBE and policies ACT.
And why would we name these concepts Trait and Policy? Describe/Act classification could be interesting, but IMO it has *nothing* to do with Trait/Policy one. See my other post for one example. Here another one: how ConversionPolicy in SmartPointer design act? Let me repeat very simple rule (though a bit simplistic to be correct in general case) I believe is keystone to the Trait/Policy separation: Trait is specific to the type Policy is orthogonal to the type. Do you have an example refuting my view?
/David
Gennadiy.