Nim, Rust, Erlang/Elixer, Shen, and Haskell are my picks. But if you don't already know C and Scheme, go back and learn those. The classics can teach you as mu

Nim, Rust, Erlang/Elixer, Shen, and Haskell are my picks. But if you don't already know C and Scheme, go back and learn those. The classics can teach you as much is the cutting edge.