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However, under the circumstances at that time, I thought these things had little effect, because after we knocked them out, we began to gather in more quantities and launched attacks on positions from all directions. Judging from the form of attacks, they were quite organized and definitely beyond the reach of ordinary wild animals.可一下五千只……就算会稽是大县，也没那么多考生啊。Brother Shin Chun! ! ! I found it! ! !“第一次”是“无论多少次”——。Let's first understand the column children that proxy objects are instantiated instead of ontology objects. For example, Jingdong CEO wants to give a gift to milk tea sister now, but if the CEO is embarrassed to give it, or has no time to give it due to busy work, then he wants to entrust his agent to do it at this time, so we can use the agent mode to write the following code:Iterator patterns are created for collection objects, For collection objects, It must involve the addition and deletion of collection elements, and certainly supports the operation of traversing collection elements. If the traversal operation is also placed in the collection object at this time, the collection object will bear too many responsibilities. At this time, the responsibilities can be separated and the traversal of the collection can be placed in another object, which is the iterator object.