迭代for循环或while循环？ [英] Iterate with for loop or while loop?

问题描述

我经常看到如下代码：

  Iterator i = list.iterator（）; 
 while（i.hasNext（））{
 ... 
} 
  

但是我写的是（当Java 1.5不可用或者每个都不能使用时）：

  for（Iterator i = list.iterator（）; i.hasNext（）;）{
 ... 
} 
  

$ b

因为

• 它比较短


• i 在较小的范围内
  
• 它减少了混淆的可能性。 （ i 在
  之外使用，而$ i 声明在哪里）

我认为代码应该尽可能简单易懂，以便我只需要制作复杂的代码就可以完成复杂的工作。你怎么看？哪个更好？

来自： http://jamesjava.blogspot.com/2006/04/iterating.html

解决方案

我更喜欢for因为它也将迭代器的作用域设置为for循环。

I often see code like:

Iterator i = list.iterator();
while(i.hasNext()) {
    ...
}

but I write that (when Java 1.5 isn't available or for each can't be used) as:

for(Iterator i = list.iterator(); i.hasNext(); ) {
    ...
}

because

• It is shorter
• It keeps i in a smaller scope
• It reduces the chance of confusion. (Is i used outside the while? Where is i declared?)

I think code should be as simple to understand as possible so that I only have to make complex code to do complex things. What do you think? Which is better?

From: http://jamesjava.blogspot.com/2006/04/iterating.html

解决方案

I prefer the for loop because it also sets the scope of the iterator to just the for loop.

这篇关于迭代for循环或while循环？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！