ext func __builtin_arg_get(arg_index: int) -> string;
ext func __builtin_arg_amount() -> int;

type Args;

// FIXME: This should return a Maybe<string> once that is implemented.
// For now, this returns an empty string
func at(a: Args, index: int) -> string {
    __builtin_arg_get(index)
}

func amount(a: Args) -> int {
    __builtin_arg_amount()
}