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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:Recommendation, show the production content, including labor and algorithm梁永军、司文斌、周瑞麒三名生长环境、心态完全不同的90后，聚集在极限训练的山地部队。为锤炼山地旅，特种大队副大队长李铁率队扮演武装匪徒，进行实战化的演习。梁永军凭着过硬的素质，得到侦察连连长肖军认可，被调到了侦察连，和司文斌、周瑞麒等士兵组建全数字化特战分队。在侦察连，梁永军意外与前来代职的前女友林雨青重逢。在艰苦的训练中，梁永军与司文斌、周瑞麒等士兵建立了深厚友谊。大演习中，梁永军骄傲轻敌，山地旅遭受建旅以来的第一次大败。旅长在旅大院建起一堵耻辱墙。在大李等人的帮助下，梁永军等人克服困难，快速成长。小豹队迎来雪耻的机会，梁永军率领小豹队带着必胜的信念再次走上军区比武场。在林雨青的技术支援下，梁永军率领小豹队力克强敌。山地旅耻辱墙改为荣誉墙，小豹队重建并被委以重任。死国灾难方休，蛰伏已久的集境终于有所动我会在SP剧中实现那个约定。Amazon宣布拿下著名作家Lee Child小说系列《侠探杰克 Jack Reacher》的剧集版项目，并交由《天蝎 Scorpion》主创Nick Santora负责，Amazon Studios﹑Skydance Television及Paramount Television联合制片。声を聞かせて 加藤晴彦 林原めぐみ