What is functional programming?

Andreas grabs his whiteboard and his Turing machine, and starts from laziness, while Lars thinks of immutability, functions, and data.

Is syntax important for being functional or not?

The functionalness of various languages are delved into, from Haskell to Rust via Python, Go, and Ruby. And, of course, the evil version of Elixir.

A good pipeline can be really nice.

Oh, and you shouldn't use witchcraft anymore.