On: JEP 325: Switch Expressions

[int_19h]

Arrows has been historically used for both functions and matches in languages that support both. E.g. Ocaml:

   let rec fib = fun x ->
      match x with 
      | 0 -> 1
      | 1 -> 1
      | _ -> fib (x - 1) + fib (x - 2)