It's an emptyloop, nothing is done with the value read.
这是一个空循环,什么也不做的阅读价值。
2
The previous example used just an emptyloop, but what happens when the elements of the collection are accessed within the loop?
前面的例子使用了一个空循环,如果在循环中访问集合元素,会发生什么?
3
Having a Virtual Machine run an emptyloop faster than another VM doesn't really tell us much about how these two will compare when running system administration scripts or Rails applications.