Want reasonable reference counting? Disable automatic sharing of immutable

[Ola Fosheim Grøstad]

On Sunday, 14 November 2021 at 20:46:59 UTC, H. S. Teoh wrote:
> C++ const is a joke, I'm not even thinking about it. :-D

Actually, it isn't a joke. Const encourages the programmer to 
keep things const, and the compiler can establish it by static 
analysis before depending on it. Basically, it means that you 
write more code that is "const" than you otherwise might have 
done.

It is the same as with "pure" (no globals) in D. If D had made 
"pure" the default then programmers would have to think twice 
about accessing globals and written more code that is local and 
easier to maintain and optimize.