Probably got the wrong place to ask this, but here it goes nothing. If Kotlin was designed without the JVM in mind would we have

nullables

and the `?

/

!!

/

?:` operators? i.e Is it safe to consider these as merely interoperability features? Specially given that there are safer ways to define default cases (with

sealed classes

for example)

I think rust is a great example of that. There is no

null

in rust, just an

Option<T>

enum and some fancy null pointer optimization. https://stackoverflow.com/a/46557737