Hashtable 与 Dictionary 哪个更快?用哪个?

HashMap与HashTable的区别玩玩,面试必考问题. 请教高手Hashtable、HashMap、HashSet的用法与区别? Hashtable 与 Dictionary 哪个更快?用哪个? Hashtable 与 Dictionary 哪个更快?用哪个? ■■Hashtable.Synchronized是啥意思啊?Hashtable parmCache = Hashtable.Synchronized(new Hashtable());这个跟Hashtable parmCache=new Hashtable() 有啥区别? HashMap和Hashtable的区别 ArrayList和LinkedList的区别HashMap和Hashtable的区别 2,ArrayList和Vector的区别,HashMap和Hashtable的区别 The import java.util.Hashtable conflicts with a type defined in the same file如题 C# Dictionary和hashtable的问题这两者有什么区别我发现哈希表不可以遍历keys,而dictionary却可以. 什么规律输出的,看不懂结果static void Main(string[] args){Hashtable htb = new Hashtable();htb[Jim] = 94;htb[Cindy] =88;htb[Mike] = 90;htb[Kate] = 85;foreach (DictionaryEntry item in htb){Console.WriteLine(item .Key + +item .Value c# HashTable和Dictionary的区别?最好多聊聊哈希表的特殊之处,和哈希表的感念!HashTable是Dictionary的子类是么?我调试一下感觉一样啊!可是我为Dictionary赋值的时候也可以赋几组键值对啊,不一定就是 Dictionary Dictionary _dic = new Dictionary();Hashtable _ht = new Hashtable();while (_dr.Read()){_ht.Clear();for (int i = 0; i < _dr.FieldCount; i++){_ht.Add(_dr.GetName(i),_dr[i]);}_dic.Add(_i,_ht);_i++;}我原本是想循环记录集并将其添加 麻烦用中文告诉我这些单词怎么读 谢谢Integer String StringBuffer init service destroy ArrayList Vector LinkedList synchronized Collection Collections HashMap Hashtable final finally finalize Overload Override Overr 英语语法：Looking up all the new words in the dictionary took him a lot of time.正在学语法,例句上说ing形式做主语,这里的ing形式有可能是一个词,也有可能是一个短语?就像Looking up all the new words in the dictiona The editors of the edition of the Oxford dictionary have included it as a verb.It means to search something on the Internet.This makes some words like google me part of the English laguage.Google is now a part of the English language.The dictiona 高一定语从句,4道选择题,在线求帮助.he is a man of great knowledge,__much can be learned.a.in hom .b.about whom .c.from whom. d .of whom.先行词是PERSON,用介词+WHOM.以上都是此形式,为什么选D呢?please pass me the dictiona 在C#语言中,以下关于集合的说法错误的是A．ArrayList 只能通过索引来访问和删除值B．HashTable可以直接通过键名来获取值C．使用List添加、读取元素时,不需要拆箱和装箱,这一点和ArrayList相同D