t0152.check

来自「JAVA 语言的函数式编程扩展」· CHECK 代码 · 共 7 行

t0152.scala:10: error: illegal inheritance;
 object boom inherits different type instances of class Value:
Value[Int] and Value[java.lang.String]
 object boom extends Value[java.lang.String]("foo") with PlusOne
        ^
one error found