On Monday, 12 October 2015 at 08:00:59 UTC, Jonathan M Davis
wrote:
You can stick value types on the heap and pass around pointers
or references to them, but then you're not dealing with
polymorphism.
As soon as you choose to use value types you already get the
first problem: pointers or references. Neither of these two work
and there are two more options here, I've gone with the fourth.
My point was entirely about polymorphism not applying to
anything without using a pointer or reference.
My point was about structs not applying to anything that needs
reference semantics (in current state of D). Your suggestion to
do otherwise is a kludge and doesn't work well.
