[swift-dev] Swift root meta-class

[Giacomo Leopizzi]

Hello everyone! 
I was discussing with a friend about metaclasses in Objective-C. In Obj-C the root meta-class was the NSObject's one. When in a swift class you create a subclass of NSObject, the root metaclass should be the same. What happen when you delcare a class without NSObject dependence? There is an hidden root-class? Where can we read more about this topic? 
 
Thanks, 
Giacomo and Annino