2.41 yes Keeping iteration status 跟踪迭代过程中的状态变化 遍历过程中,提供了如下属性: index starting with 0 count starting with 1 size total amount of elements in the iterated variables current current object even/odd boolean value,第偶数个/奇数个 first/last boolean value.第1个/最后1个 在...