Scala flatten List

Question

I want to write a function that flats a List.

object Flat {
  def flatten[T](list: List[T]): List[T] = list match {
    case Nil => Nil
    case head :: N         


        

Answer 1

  def flatten(ls: List[Any]): List[Any] = ls flatMap {
    case ms: List[_] => flatten(ms)
    case e => List(e)
  }