Garbage Collector?

[Ola Fosheim Grøstad via Digitalmars-d]

On Saturday, 29 April 2017 at 07:26:45 UTC, Timon Gehr wrote:
> I don't doubt that, but the implicit generalization is 
> "multiple pointer types are necessarily always a royal PITA". 
> Not true. scope has worse usability than a scoped pointer type.

Yes. In this context it is was more about the GC lifetime 
management which requires:

1. The ability to tell the GC about explicit parent-child 
relationships so that the GC destruction order becomes 
deterministic.

2. Precise collection.