import options

type
  Result*[T] = object
    Err: T
    Ok: T

var
  res: Result[bool]

proc is_ok[T](): T =
  if res.Ok:
    return true
  elif res.Err:
    return false

proc is_err[T](): T =
    return not is_ok()

proc ok*[T](x: T): Option[T] =
  case res
    of res.Ok: some(x)
    of res.Err: none()

proc err*[T](x: T): Option[T] =
  case res
    of res.err(): some(x)
    of res.ok(x): none()


proc add(x: int, y: int): Result[string] =
  if x == y:
    discard ok("fine")
  elif x != y:
    discard err("Not Working")

echo(add(3,2))