compound.scala

来自「JAVA 语言的函数式编程扩展」· SCALA 代码 · 共 10 行

abstract class A { type T }

abstract class B { val xz: Any }

abstract class Test {
  var yy: A with B { type T; val xz: T } = null;
  var xx: A with B { type T; val xz: T } = null;
  xx = yy;
}