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The effect is shown in the following figureAs the name implies, iterator pattern is to access objects in an aggregation sequentially. Generally speaking, it is very common in collections. If you are familiar with collection classes, it will be very easy to understand this pattern. This sentence contains two meanings: one is the object that needs to be traversed, that is, the aggregated object, and the other is the iterator object, which is used to traverse the aggregated object. Let's look at the diagram:Arbor Networks' Pravail Availability Protection System (APS) is specially designed for enterprises. It provides DDoS attack identification and mitigation functions that can be used after opening packages and have been tested in practice. Such functions can be deployed quickly with few configurations and even in the process of attack occurrence. Pravail APS focuses on protecting the network boundary from threats to availability, especially providing protection against application layer DDoS attacks, and can meet the increasingly severe challenges faced by managers when they are in DDoS attacks. By using a series of countermeasures, Pravail APS detects and blocks DDoS attacks, especially in cloud environment.陈启摊摊手，说道：该透露的，《倚天》中都透露了。故事开始于卧底警察潜伏黑帮，意外的坐上了黑帮老大的位置，不料被大毒枭设计一步步拖入公海的魔鬼运输船；恰逢此时，一支神秘的第三方部队正在展开他们的复仇计划，命运的纠葛从此开始。在三方力量的角逐中，激烈的搏斗、刀战、枪战、狙击战、遥控炸弹，层层升级步步惊心。在法与情，爱与恨，兄弟和女人之间，有些事情总要有人去做。有花草树木，还有憨态可掬的鸡鸭鹅等，都爱的跟什么似的。疼痛之余，杨长帆终于重新开始了理性思考，首先他能听出来，这里所谓的蠢儿绝非自谦，意思非常明确，她儿子应该是真的蠢，生理上的蠢，通过不断的捶打，不难推断出，这位蠢儿子指的应该是自己。