摘要:
这是一个多值Map的工具类。这个map的值都是collection类型。(如果同一个key只put了一次,那么还get到的还是Collection类型) 阅读全文
摘要:
A bimap (or "bidirectional map") is a map that preserves the uniqueness ofits values as well as that of its keys. This constraint enables bimaps tosup 阅读全文