(* your code goes here *)
type 'a optional = None | Some of 'a
let myStuff = Some(42)
let () = match myStuff with
;;
KCogeW91ciBjb2RlIGdvZXMgaGVyZSAqKQp0eXBlICdhIG9wdGlvbmFsID0gTm9uZSB8IFNvbWUgb2YgJ2EKCmxldCBteVN0dWZmID0gU29tZSg0MikKbGV0ICgpID0gbWF0Y2ggbXlTdHVmZiB3aXRoCgl8IFNvbWUoaSkgLT4gcHJpbnRfaW50IGkKCXwgTm9uZSAtPiBwcmludF9zdHJpbmcgIllvdSBoYXZlIG5vdGhpbmcgdGhlcmUgZmVsbG93IgoJOzsK