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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.男主起初被火辣的姐姐吸引后来被伤害，但是把善良的妹妹错认成了姐姐，各种质问和纠缠，却一直不知道自己认错了人。而女主也在和男主相处的这一过程中，渐渐爱上了男主，知道男主认错了人，以为男主爱的不是自己而非常纠结。但是，我们侠客文化可以。明熹宗朱由校本是懵懂少年，不知民间疾苦家国大任，只一心沉醉他拿手的木工活。后来，在深明大义的皇后张嫣和来自民间的妃子张宝珠的影响下，他渐渐成长起来，决心发愤图强，挽救破落的大明。朱由校的觉醒让把持朝政的客氏和魏忠贤感到恐惧，他们只想要一个傀儡，不想要一个明君。不再天真的朱由校看到的是一个疮痍满目的王朝，他决定支持东林党放手一搏，但是由于提前走漏了风声，招致客魏的反扑。在国家紧要关头，朱由校做出最正确的选择，将英明果决的弟弟朱由检推上了皇位，而自己却带着淡淡的遗憾为自己一生的爱恨情仇画上了句号……For example, if we want to implement a JS function, Such as form validation, Then if we don't use the policy pattern in javascript described in the previous chapter to solve the form validation encapsulation code, It is a temporary form validation function written by itself. Certainly without any encapsulation, Then at this time, we will pop up a prompt to the user for whether the two values are equal. If there is a form verification on another page, their judgment method and business logic are basically the same, but the comparison parameters are different. Should we consider writing a form verification code again? So now we can consider using the template method pattern to solve this problem. Common methods are extracted, and different methods are implemented by specific subclasses. This design code also has the advantages of stronger scalability and better code ~恐慌是一个新的亚马逊黄金视频一小时的戏剧系列，由劳伦奥利弗（根据她的畅销小说）写和创造。它发生在得克萨斯州的一个小镇上，每年夏天毕业的大四学生都要参加一系列挑战赛，赢家通吃，他们认为这是他们摆脱困境、让生活变得更好的唯一机会。但今年，规则发生了变化——钱比以往任何时候都多，游戏变得更加危险。球员们将面对他们最深、最黑暗的恐惧，被迫决定他们为了胜利愿意冒多大的风险。