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mesagie/gist:5128389

Created March 10, 2013 12:31
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Counting occurrences one-liner
Raw
gistfile1.scala
scala> "encyclopedia" groupBy identity mapValues (_.size)
res2: scala.collection.immutable.Map[Char,Int] = Map(e -> 2, n -> 1, y -> 1, a -> 1, i -> 1, l -> 1, p -> 1, c -> 2, o -> 1, d -> 1)
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