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User class unified interface, User1 and User2 are different objects respectively, and they are related. If the mediator mode is not adopted, the two need to hold references to each other, so the coupling degree between the two is very high. In order to decouple, the Mediator class is introduced to provide unified interface, and MyMediator is its implementation class, which holds instances of User1 and User2 to control User1 and User2. In this way, User1 and User2 objects are independent of each other. They only need to maintain a good relationship with the Mediator, and the rest is maintained by the MyMediator class! Basic implementation:这个开创性的系列旨在回答历史上最重要的问题之一。 纳粹最终是怎么做的？ 受过良好教育的文明人如何变成了扭曲得难以想象的残酷怪物。 这个令人震惊和揭示性的系列文章探讨了六个主要的纳粹分子。秦旷忙道：香儿妹妹这饼确实别具一格。这一刻，紫月剑的粉丝沸腾了。主人公赵小天天赋异能，拥有超强的自愈能力。在历经一场意外场爆炸后，他来到了一个崇尚武道的新世界，并成为了首富赵家的嫡孙。但这一身份却让他屡遭歹人迫害，于是他被家人送入了武道名门大派——逍遥门，修习武艺防身。 然而出乎众人意料的是，从未有过武学基础的赵小天竟然天赋异禀，有着超乎常人的习武天赋。赵小天的师傅因担心其过于骄傲，而决定采取打压教学，这让赵小天误以为自己实力低下，于是更加刻苦努力的修炼。 赵小天就这样在不知不觉中逐渐成长了起来，也逐渐与门中的师兄妹们结下了深厚的友谊情感。然而随着他实力的增长，潜藏的危机也逐渐浮现，他也即将面临着接受试炼的挑战......我可警告你。