[one-more-minute]

Believe it or not it's actually perfectly feasible to implement first-class objects and inheritance on top of Julia. You can even integrate it with multiple dispatch (via some metaprogramming and manipulation of the type system) and get object~method(x,y) syntax.

I didn't want it enough to flesh out the prototype (and would argue that Julia's native approach is better anyway) but it's inevitable that someone will do this eventually.