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Say I have a val s: Option[Option[String]]. It can thus have the following values:
Some(Some("foo"))
Some(None)
None
I want to reduce it so that the first becomes Some("foo") while the two others become None. Obviously there are many ways to accomplish this, but I’m looking for a simple, perhaps built-in, less-than-one-liner.
It’s a shame thatflattendoesn’t exist. It should.Flatten does exist now.
As before,
(in addition to the other answers) will also do the same thing.