使用 for 循环或 while 循环进行迭代?

2022-01-10 00:00:00 for-loop iterator java

我经常看到这样的代码:

I often see code like:

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

但我这样写(当 Java 1.5 不可用或每个都不能使用时):

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(); ) {
    ...
}

因为

  • 更短了
  • 它将 i 保持在较小的范围内
  • 它减少了混淆的机会.(i 是否在尽管?i 在哪里声明?)
  • 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?)

我认为代码应该尽可能简单易懂，这样我只需要编写复杂的代码来完成复杂的事情.你怎么认为?哪个更好?

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?

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

推荐答案

我更喜欢 for 循环，因为它还将迭代器的范围设置为仅 for 循环.

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

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