contrib467.scala

来自「JAVA 语言的函数式编程扩展」· SCALA 代码 · 共 23 行

abstract class M
{
    val data: List[M]
}

object Test
{
    def main(args: Array[String]): Unit =
    {
        object SA extends M
        {
            val data = List()
        }

        object SB extends M
        {
            val data = List(SA)
        }

        ()
    }
}