questions on class definitions and mixins

[bearophile]

Adam D. Ruppe:

> It just wasn't there but there's some people who think it would 
> be a good idea to add (including Walter I think) so it might be 
> in later.

It increases the syntactic variance of D code, and people coming 
from C++ will go using it straight (and not just in the uncommon 
cases discussed by Manu).

Perhaps it could be added with an ugly syntax that discourages it 
usage in 99% of the cases, like:

void __external_class_method ClassName.methodName() {}

Bye,
bearophile