HashMap,HashTable和HashSet的区别，很好的说明的他们具体的分别。-HashMap, HashTable and HashSet difference, a very good descr iption of their specific difference.

VS2010相关的地图的查询代码，hashmap继承于_Hash，基本所有实现都是对于_Hash得封装-VS2010 related maps query code, hashmap inherited _Hash, basically get all implementations are packaged for _Hash