I just meant that its much nicer to read and write (T) -> R vs Function<T,R> Maybe Kotlin lacks implementing interfaces functionally but in practice, I can'

I just meant that its much nicer to read and write (T) -> R vs Function<T,R> Maybe Kotlin lacks implementing interfaces functionally but in practice, I can't remember it being a pain point. Funtional programming in Java to me, still feels very clunky compared to scala and kotlin.