Clean way to tell whether a destructor is called by the GC

[Kagamin via Digitalmars-d-learn]

On Tuesday, 12 May 2015 at 12:53:59 UTC, ponce wrote:
> I already have such a dispose() function.
> The problem is that to support Unique! and scoped! and friends, 
> the destructor must call dispose(). Thus my need for a way to 
> separate the GC-induced destructors within dispose() or ~this 
> (same problem).

Maybe it's simpler to copy-paste Unique and scoped and modify 
them to handle disposable objects?