[Solved] Scala groupBy to map from list [closed]

by


Given List:

val myList = List(
    "IDENTIFIER, a, b, c", 
    "IDENTIFIER, d, e, f",
    "INFORMATION, a, b, c",
    "INFORMATION, d, e, f"
)

Using,

myList.map(_.split(",")).groupBy(_.head).mapValues(_.map(_.tail.mkString(" ").trim))

In Scala REPL:

scala> myList.map(_.split(",")).groupBy(_.head).mapValues(_.map(_.tail.mkString(" ").trim))
res91: scala.collection.immutable.Map[String,List[String]] = Map(IDENTIFIER -> List(a  b  c, d  e  f), INFORMATION -> List(a
  b  c, d  e  f))

scala>

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solved Scala groupBy to map from list [closed]