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The fundamental reason for using design patterns is to adapt to changes, improve code reuse rate, and make software more maintainable and scalable. In addition, the following principles should be followed when designing: single responsibility principle, open and closed principle, Richter substitution principle, dependency inversion principle, interface isolation principle, composite reuse principle and Dimit principle. Each design principle is described below.Then open the simulator and click the file in turn-load the game, run the game, and if there is no game, click the scan on the right to add the game.《瑞奇宝宝》是专为学龄前儿童研发的动画短片，涵盖了儿童心理学家和国际早教专家根据不同月龄而精心设计的早教知识；以寓教于乐的“故事+儿歌+游戏”的模式，陪伴孩子开启4Q天赋：IQ（认知和探索）、EQ（情绪和社交）、AQ（艺术和创意）、MQ（运动和作息）。每集动画都是一个独立的小故事，由故事和儿歌两部分组成；有趣的故事情节和活泼轻快的儿歌能够轻松吸引到宝宝们的注意力，充分发挥寓教于乐的效果。板栗对着弟弟做了个痛苦的表情，哀声道：苞谷，大哥好饿哟——苞谷愣住了，不理郑氏递到嘴边的饭勺，嘴巴也不嚼了，瞪着眼睛疑惑地望着站成一排的哥哥姐姐们：饿了咋不吃哩？众人一见有指望，忙都喊弟弟，你说想吃这个，她说想吃那个，玉米求他帮忙跟娘说好话，乱七八糟的声音此起彼伏。The previous code uses this method to bind the event handler function for the window.onload event. It binds an anonymous function, and of course it can also bind a named function. The code example is as follows:正讲到夫为妻纲，就见前排两个小女娃挨着头嘀嘀咕咕，他便上前问缘故。空扉 -- 乃木坂46