>557をscalaでベタ移植してみた。

case class Cell(var alive:Int) {
　var neighborhood = List[Cell]()
　var alive_ = 0
　def evaluate() {
　　val s = neighborhood.map(_.alive).sum
　　alive_ = if(s == 3 || s == 4 && alive == 1) 1 else 0
　}
　def update() { alive = alive_ }
}
case class Board(val lattice:List[List[Int]]) {
　val cells = lattice.map(_.map(x => Cell(x)))
　val m = lattice.size; val n = lattice(0).size
　for(i <- 0 until m; j <- 0 until n; k <- -1 to 1; l <- -1 to 1)
　　cells(i)(j).neighborhood ::= cells((i+k+m)%m)((j+l+n)%n)
　def life() {
　　cells.foreach(_.foreach(_.evaluate))
　　cells.foreach(_.foreach(_.update))
　}
　override def toString() = {
　　cells.map(_.map(_.alive.toString).reduce(_ + "," + _)).reduce(_ + "\n" + _)
　}
}
val board = Board(List(List(0,1,1,1,0),List(0,1,0,0,0),List(0,0,1,0,0),List(0,0,0,0,0),List(0,0,0,0,0)))
board.life
print(board)

scalaの機能を余り活用できていない感じ。