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As 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:生活在夏威夷的富家子陈立品（钟镇涛 饰）个性腼腆，情场始终不得意，于是请来香港的老朋友罗旦多（陈百祥 饰）实地指导。二人在海滩偶遇美女小猫（张曼玉 饰）、阿美（钟楚红 饰），试图搭话却铩羽而归。陈父令陈立品赴港调查下属公司账目，不料陈、罗二人发现小猫和阿美正是陈氏企业职员，陈立品为了查账和接近阿美，与罗旦多互换身份。罗旦多得以接近经理秘书小猫，并与贪污的经理陈皮后（曹查理 饰）虚与委蛇。另一方面陈立品以司机的身份渐渐获得了阿美的信任跟欣赏。担心贪污事发的陈皮后请来爱情女骗子袁飘飘（关之琳 饰），委托她骗取陈立品的感情……Public class State {Creating a New World//313心系国家的老党员罗秉文响应国家号召将儿子罗家明送往边疆参加支边建设。在支边期间罗家明认识了同为支边青年的科研人员沈湘玥，并帮助沈湘玥所在的科室研究出了新型化肥，大大提高了生产力。同时他在机械工程师宋思逸的影响下，心系祖国机械工业发展，组建了边疆的机械队伍，为边疆的机械化生产奠定了基础。在此过程中，罗家明与沈湘玥两人互相帮助、彼此欣赏，共同克服了种种困难，正当两人几经磨难眼看将要修成正果之际，却因为各自的理想而不能继续共事一处，风雨飘摇中，两人的命运将走向何处……In order to win the attention of this group of consumers, Chinese export e-commerce sellers can use Micro conversions to build customers' trust in your website imperceptibly, thus affecting 90% of visitors who had no purchase intention to generate purchase ideas. So where can sellers start? There are the following 8 points:电影讲述了张静依（赵丽颖饰）、陈伊诺（吴映洁饰）、梁小艺（班嘉佳饰）三个性格各异的女孩携手走过人生中最美好的十年，朝着各自的人生目标懵懂成长的故事。笑泪交织，引人入境。