Code Reading -chap8
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + Chapter8:Documentation+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++150. Takeadvantage of any documentation you find to supplement your code reading effort.(P.241) 利用一切你可以找到的文档去帮助提升你的代码阅读效果。----------------------