scala for-例子4

例子
ForTest4.scala
object ForTest4 extends App {
    var matrix = Array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
    for (i <- matrix
         if i % 2 == 0)
        println(i);
}
编译
>scalac -d classes ForTest4.scala
执行
>scala ForTest4
2
4
6
8
10