Stroustrup is disappointed with D :(

[Ola Fosheim Grøstad via Digitalmars-d]

On Tuesday, 22 September 2015 at 23:21:20 UTC, Steven 
Schveighoffer wrote:
> Yeah, but you can't do this in C++ though:
>
> class D : B {
>    this()
>    {
>       writeln("derived is only now complete");
>       super();
>    }
> }
>
> I find the ability to control the construction order far more 
> important than virtual calls for base constructors.

You could do it in old C++ compilers, and some have a permissive 
switch that allows you to do it, but you should not do it. It 
leads to incorrect initialization and breaks encapsulation 
(unsound typing). Forcing construction order is a Good Thing.

In Beta, the successor to Simula, all execution follows this 
pattern:

this(){
    begin_prepare_stuff();
    subclass.this();
    end_prepare_stuff();
}

This way the superclass defines what you can override which is 
better for correctness.