Agreed. This is the most obvious way fwd. Rust, Haskell, Elm, even Kotlin seems to come along nicely. Exceptions and null for error cases are horrible and Java

Agreed. This is the most obvious way fwd. Rust, Haskell, Elm, even Kotlin seems to come along nicely. Exceptions and null for error cases are horrible and Java and Go are doomed. (semi-jokingly)