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Ingy döt Net 2013-04-10 23:57:08 -07:00
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commit b83f433714
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Task/Power-set/Scala/power-set.scala Normal file
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def powerset[A](s: Set[A]) = s.foldLeft(Set(Set.empty[A])) { case (ss, el) => ss ++ ss.map(_ + el) }