DIP in making: ProtoObject

[Steven Schveighoffer]

On 4/4/18 12:49 AM, Andrei Alexandrescu wrote:
> I'm working on a simple older idea to get it out of the way in 
> preparation for the more difficult DIPs to come:
> 
> https://github.com/andralex/DIPs/blob/ProtoObject/DIPs/DIPxxxx.md
> 
> This is not officially reviewable yet, but conveys the gist and could 
> use some early feedback. Any insight will be appreciated.

Awesome, I remember you talking about this, glad to see it started.

One thing you don't address is the ClassInfo requirement. Every class 
instance also has a ClassInfo member, which provides runtime type info, 
and the vtable used to call virtual functions. I think this needs to be 
discussed in the DIP.

It's a bit confusing that you have typed ProtoObject as extern(C++), 
since the vtable layouts between C++ and D are incompatible. What does 
this mean?

-Steve