TicTacToe Sealed Classes

gistfile1.scala

package com.jasonwhaley.tictactoe

sealed abstract class TicTacToeSpace {
  val representation : String
  override def toString() : String = {
    return representation
  }
}

case class X extends TicTacToeSpace {
  override val representation = "X"
}
case class O extends TicTacToeSpace{
  override val representation = "O"
}
case class Empty extends TicTacToeSpace {
  override val representation = " "  
}