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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.4、六月雪 7集 窦娥－傅娟 东门笑－谢绍光回雁楼上，重伤的令狐冲开始和田伯光展开了一场别开生面，而又惨烈异常的斗智斗勇。-Tail lights, 3 nautical miles;"Let 's put it this way, Hit the wasp with ordinary bullets, One shot at most, But it's not the same with drag armour-piercing bombs, As long as it hits the big wasp, The big wasp can burn into a fireball in an instant. Then as long as you touch the same kind around you slightly, You can set them on fire, Let them burn themselves between themselves, Ordinary bullets cannot achieve this effect without this function, In fact, just like the principle of "74 spray", Although the area covered by the burning cannot be compared with the flame tongue emitted by the '74 spray', However, the effective range of traced armour-piercing firebombs is far away. They can be hit at a distance of several hundred meters, which is much stronger than the '74' spray, which takes 30 meters to fire. If you think about it, we can kill them efficiently only when hundreds of big wasps fly to a distance of 30 meters from you. The pressure is not generally large, but quite large.途中，珊灵偶遇送快递的小伙赵子喜，更离奇的是赵子喜开启了神秘的画卷，接下来，发生了一些不可思议，让人大吃一惊的事情…杨长帆露出伟岸温柔的笑容，没有你，我走不到那里。