You can also use anonymous functions if you find the module syntax a little terse or clunky for shell scripting. double = fn a -> add.(a, a) end double

You can also use anonymous functions if you find the module syntax a little terse or clunky for shell scripting. double = fn a -> add.(a, a) end double.(4) It starts to look a bit like a weird untyped OCaml / F# if you use pattern matching: f = fn x, y when x > 0 -> x + y x, y -> x * y end