Languages/C/Samples
From UIT
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Counting matching elements in collection
object test { val x = Seq("foo", "bar", "bar", "baz", "foo") //> x : Seq[String] = List(foo, bar, bar, baz, foo) x.groupBy(identity).map(x => (x._1, x._2.length)) //> res0: scala.collection.immutable.Map[String,Int] = //| Map(baz -> 1, foo -> 2, bar -> 2) }
groupBy(identity) is a synonym of groupBy(x => x)
