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deeperunderstanding/wordcount.scala

Created December 22, 2019 14:14
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wordcount.scala
object WordCount extends MapReduce[String, String, Int, Int] {
override def mapper(line: String): Seq[KeyValue[String, Int]] =
"""[\w']+""".r.findAllIn(line).map { word => KeyValue(word, 1) }.toVector
override def reducer(key: String, values: Seq[Int]): KeyValue[String, Int] =
KeyValue(key, values.sum)
}
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