How to iterate over array elements in scala

Question

Heads up, I'm new to Scala

object ch3
{
  def main(args: Array[String]): Unit =
  {
    var foo =  Array (scala.io.StdIn.readLine().split(" ").map(_.toInt))
    foo.foreach(println)
  }
}

Scenario: The input contains 3 space separated integers read from stdin, like 1 2 3. How can I iterate over that array and print the elements?

The problem is that when I try to print the array elements, I get this value [I@7ff9c904.

Willis Blackburn · Accepted Answer · 2017-02-26 21:36:12Z

3

The output of scala.io.StdIn.readLine().split(" ").map(_.toInt) is already an Array of Int. You're passing it to Array, which creates a new single-element array containing the output of map.

Just remove the outer Array.

var foo = scala.io.StdIn.readLine().split(" ").map(_.toInt)
foo.foreach(println)

answered Feb 26, 2017 at 21:36

Willis Blackburn

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