If you don't extend a parent class, the default parent is AnyRef, a direct child class of Any.

如果你不继承任何父类，默认的父亲是AnyRef, Any的一个直接子类。

youdao

We discuss the difference between Any and AnyRef when we discuss the Scala type hierarchy in the section called "the Scala type hierarchy".

我们会在“scala类型层级结构”章节中讨论Any和AnyRef的区别。

youdao

We discuss the difference between Any and AnyRef when we discuss the Scala type hierarchy in the section called "the Scala type hierarchy".

我们会在“scala类型层级结构”章节中讨论Any和AnyRef的区别。

youdao