I have this function in Scala:

def printA(A: Array[_]): Unit = {
    if (A.isInstanceOf[Array[Int]]) A.foreach(t => println(t))
    else A.foreach(a => printA(a))
  }

I don't know, how to fix this error, that printA(a) is Any. The function accepts input Array[_]

Thanks, guys!

CodePudding user response：

Maybe, it is better to check an element instead of an array?

  def printA(array: Array[_]): Unit = {
    array.foreach {
      case i: Int => println(i)
      case arr: Array[_] => printA(arr)
      case unknown => sys.error("Unsupported element: " unknown) 
    }
  }