After reading this, I tried to find out which versions of Haskell and Scala introduced higher kinded types. I'm sure it wasn't among the first features. Does an

After reading this, I tried to find out which versions of Haskell and Scala introduced higher kinded types. I'm sure it wasn't among the first features. Does anybody know the history of either? AFAIK you can't do Functor in Rust yet either, and for the same reason.