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Therefore, learning design patterns, The first thing to do is to understand which aspects of design patterns are available to developers, Then, the principle, timing and method of each design pattern are studied respectively, that is to say, under what circumstances should a certain design pattern be used? When understanding the timing of a certain design pattern, it is also necessary to understand what consequences will be caused if this design pattern is not used at this time. After understanding the principle and usage of each pattern, more importantly, learning the object-oriented thinking mode, after mastering the object-oriented thinking mode, looking back at the design pattern, you will have a deeper understanding. Finally, learning the design pattern, you must study hard and practice more. "I agree with the last sentence very much."A5.1. 3 Functional inspection.楚王宁弈，看似风流散漫的当朝六皇子，内心却背负着惨痛往事。他以天下为棋局，洗雪冤屈、惩治奸佞、整肃朝纲，在腥风血雨的朝堂争斗中步步为营。凤知微，被逐高门之女，不甘屈服于坎坷的命运，女扮男装进入青溟书院，一跃成为无双国士魏知，风云渐起于朝野。一个是城府深藏的亲王，一个是初露锋芒的官场新秀，两人在风云诡变的朝堂里彼此试探、频频过招，相互排斥却又不自禁相互吸引。而当彼此的心渐渐向对方敞开，邂逅的却是命运彻骨的森凉影片是由李昂执导，高宝成、刘继忠、祝新运主演等你们回来，说给你们听馋死你们。At more than ten o'clock in the morning, four people came to the company, and the collection first controlled them. Of course, skin education is indispensable.