以实现的类：

XArray<T>

XDynamicArray<T>

开始实现XByteBuffer

1、定义好相关类的框架，也就是只有定义，而无实现内容

2、依次实现

-to achieve the category : XArraylt; Tgt; XDynamicArraylt; Tgt; A XByteBuffer began, a good definition of the relevant categories of the framework, which is only definition content without realizing two, in order to achieve