Ask HN: What functional programming language(s) do you use?

Erlang - it does stuff that's handy for me in the real world.

Cool.

We've used Haskell to make a VR Linux Desktop prototype called Simula: https://github.com/SimulaHS/Simula

Rust. It's fast and the syntax feels like OCaml/Haskell. Like Haskell, the compiler does a LOT for you.

It's the practical Haskell.

I am checking out F# myself. Still early, but seems interesting and powerful.

P.S. Thanks to all who reply.