list_for_each()与list_for_each_safe()的区别

list_for_each()与list_for_each_safe()是用于遍历链表的两个宏定义。它们的主要区别在于list_for_each_safe()多了一个中间变量n，用于安全地删除链表节点。具体来说，list_for_each_safe()在遍历链表时，会先保存当前节点的下一个节点的指针，再执行遍历操作。这样做的目的是为了防止在遍历过程中删除节点时出现指针错误。而list_for_each()则没有进行这样的安全处理，如果在遍历过程中删除了节点，可能会导致指针错乱。因此，当需要对链表进行删除操作时，应该使用list_for_each_safe()来遍历链表。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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