Un-optioning an optioned Option

Question

Say I have a val s: Option[Option[String]]. It can thus have the following values:

Some(Some(\"foo\")) Some(None) None

Answer 1

Well, I actually don't understand how come it could be just None (the third case). If it can really be also just None, then I would vote for Rex Kerr's answer, otherwise just .get would be enough:

scala> Some(Some("foo")).get
res0: Some[java.lang.String] = Some(foo)

scala> Some(None).get
res1: None.type = None