Topic: 关于FOR、WHILE循环的讨论! |
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1.关于FOR、WHILE循环的讨论! | Copy to clipboard |
Posted by: jameszhang Posted on: 2004-11-11 16:50 for (boolean more = true; more; ) { |
2.Re:这样写FOR循环的举手!! [Re: jameszhang] | Copy to clipboard |
Posted by: Jove Posted on: 2004-11-11 17:17 倒,为什么不用while(flag)呢, 真够BT |
3.Re:这样写FOR循环的举手!! [Re: jameszhang] | Copy to clipboard |
Posted by: JiafanZhou Posted on: 2004-11-11 18:44 For loop is always better than while loop. |
4.Re:这样写FOR循环的举手!! [Re: HenryShanley] | Copy to clipboard |
Posted by: 烂泥 Posted on: 2004-11-11 20:31 HenryShanley wrote: 请指教哦 |
5.Re:这样写FOR循环的举手!! [Re: jameszhang] | Copy to clipboard |
Posted by: JiafanZhou Posted on: 2004-11-11 21:27 ArrayList al=new ArrayList(); |
6.Re:这样写FOR循环的举手!! [Re: HenryShanley] | Copy to clipboard |
Posted by: why Posted on: 2004-11-11 22:47 HenryShanley wrote: { has the same effect. while is good syntatic sugar for clarity. Anyway, I like to use for than while. |
7.Re:这样写FOR循环的举手!! [Re: why] | Copy to clipboard |
Posted by: edgeloner Posted on: 2004-11-12 13:04 我iterator一贯喜欢用for,while在实际中我几乎没有怎么用到,能用for我一般不去用while。for感觉要干净些 |
8.Re:这样写FOR循环的举手!! [Re: jameszhang] | Copy to clipboard |
Posted by: qingbo777 Posted on: 2004-11-13 00:52 我比较喜欢用FOR,几乎从来不用while. |
9.Re:这样写FOR循环的举手!! [Re: jameszhang] | Copy to clipboard |
Posted by: raulmadrid Posted on: 2004-11-13 12:06 for( ; ; ) { } 不就可以了么 |
10.Re:这样写FOR循环的举手!! [Re: raulmadrid] | Copy to clipboard |
Posted by: qingbo777 Posted on: 2004-11-13 17:30 raulmadrid wrote: 个人认为,用这种方法要跳出的话必须用break,不如人家的方法有节奏感. |
11.Re:这样写FOR循环的举手!! [Re: qingbo777] | Copy to clipboard |
Posted by: littledeer1974 Posted on: 2004-11-13 18:47 qingbo777 wrote: 可是有的时候用FOR是不是比较明白 比方说线程里的那个 public void run(){ 是不是这样好点呢,还有Stream里边
我觉得用while好像更自然易懂一些 :)不知道大家编写程序时,还有什么习惯呢 |
12.Re:这样写FOR循环的举手!! [Re: jameszhang] | Copy to clipboard |
Posted by: zangweiren Posted on: 2004-11-13 21:27 我觉得只要不影响效率,用哪种方法就是大家的习惯问题了 |
13.Re:这样写FOR循环的举手!! [Re: jameszhang] | Copy to clipboard |
Posted by: dingligang Posted on: 2004-11-15 01:59 Effective Java 第七章第29条(我看的是中文版)讲到了这个问题。 for和while实现的功能差不多,但是for相对while至少有2点好处: 1)for可以比while少一行 for: for(Iterator i=c.iterator();i.hasNext() ; ){ but while Iterator i = c.iterator(); 2)for可以使局部变量的作用域最小化 还是上面那个例子,Iterator i在for中,属于for的局部变量,不暴露给外面的代码,而while则不同,后续的代码可能会继续错误的使用(引用)这个变量 如: if(i!=null){ //this i is not that i , but the compiler can not detect it!! |
14.Re:关于FOR、WHILE循环的讨论! [Re: jameszhang] | Copy to clipboard |
Posted by: wuyongjin Posted on: 2004-11-15 13:53 哈哈,大家 的解释都不错啊 还是看实际啊 问题时候在说啊吧! |
15.Re:关于FOR、WHILE循环的讨论! [Re: jameszhang] | Copy to clipboard |
Posted by: myster Posted on: 2004-11-19 16:46 我个人对for循环有种亲切感。 |
16.Re:关于FOR、WHILE循环的讨论! [Re: jameszhang] | Copy to clipboard |
Posted by: loverzhongping Posted on: 2004-11-22 16:08 I like use for ,and I never use while! |
17.Re:关于FOR、WHILE循环的讨论! [Re: jameszhang] | Copy to clipboard |
Posted by: zcjl Posted on: 2004-11-23 17:54 看不出跟楼主的代码相比: while (true) { 不好在哪里? 尽管我也多数用for,而不是while 只因为 Effective Java 里的一个Item,就否决了while存在的必要 是否太极端了些? |
18.Re:关于FOR、WHILE循环的讨论! [Re: jameszhang] | Copy to clipboard |
Posted by: cicy02 Posted on: 2005-02-18 15:45 用C和C++时,比较喜欢用for; 现在偏好while,尤其是do...while; |
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