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Functions are called in,, and phases. It is an important method to check attribute changes and optimize performance. The following figure excerpts some codes for handling event binding. The method has a value pointing to the last attribute, which is the current attribute value. Here is the event handling function that we bind to the component. If the binding event that is not used for air conditioning is empty, the event binding is logged off.Click on the following item of the fourth item in the simulator toolbar, and there is a choice of Chinese language pack. .The delegate is a class, which can also be instantiated. The method is assigned to the delegate instance through the constructor of the delegate.三纲么？君为臣纲，君不正，臣投他国。这个段子，三年零两个月前出现的，可以使用，列入备选，等级e＋。iKON网络团综《iKON的心动青春旅行》2018年7月4日首播~！由YG与某手机平台共同投资制作的iKON全新团综《iKON的心动青春旅行》将于今天下午8时首播。该节目是一档成员们前往夏威夷展开的旅行真人秀治愈节目，共分为10期，每周三、周六下午6时播出。