If you could make any changes to D, what would they look like?

[Ola Fosheim Grøstad]

On Wednesday, 20 October 2021 at 21:05:44 UTC, Ali Çehreli wrote:
> Me neither because I was following convention in C++: "Pass 
> inherited types by reference because there is slicing." That 
> rule renders C++ classes (and structs) of inheritance 
> hierarchies "reference types". I like D's (and Java's and C#'s) 
> approach here.

That is the classical Simula model. Simula did however use ":-" 
for reference assigment and ":=" for value assignment, so it was 
always clear to the user that objects followed reference 
semantics.