我们会在“scala类型层级结构”章节中讨论Any和AnyRef的区别。

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

youdao

您可以点击源代码中的属性确认器，来得到所有属性确认器的列表，然后打开类型层级结构浏览器(F4)并选择deployattributevalidator类。

You can get a list of all attribute validators by clicking on an attribute validator in the source code, then open the type hierarchy explorer (F4) and select the DeployAttributeValidator class.

youdao

UIMA通过一个层级类型系统定义连接、输入和输出。

The connection, inputs, and outputs are defined by UIMA through a hierarchical type system.

youdao