typeof(this) return wrong type

[Adam D. Ruppe via Digitalmars-d-learn]

On Saturday, 22 April 2017 at 12:23:32 UTC, Basile B. wrote:
> use a "template this" parameter:

I think the nicest way to do it is to use the template this 
parameter in the constructors, since that's the one function that 
you can guarantee is always called on the most derived type.

Of course, you can still forget to call it in a child class..