Stop using, opt match { case Some(x) => f(x); case None => y } Stop using, http://opt.map (f).getOrElse(y) Use, opt.fold(y)(f) I feel like I'm very late to this party.
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you're missing that that's not the "not play nicely" Olaf means. scala> Option(1).fold(Nil)(_ :: Nil) <console>:12: error: type mismatch; found : List[Int] required: scala.collection.immutable.Nil.type Option(1).fold(Nil)(_ :: Nil) ^
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yeah :)
Thanks. Twitter will use this to make your timeline better. UndoUndo
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There is no cata in cats is there?
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