The value of the current_card method is what you want to render, and to do that, you need a view class.
current _ card方法的值就是要呈现的值，为了呈现这个值，需要一个视图类。
You may have noticed that when you selected a method in the Outline view and the Hierarchy view, the class of the selected object was not always the same.
您可能已经注意到，当您在Outline视图和Hierarchy视图中选择了一个方法时，所选对象的类并非总是相同的。
The primary method of this class is the action, which handles displaying appropriate information in the view based on the action performed by the user.
此类的主要方法为action，它基于用户执行的操作处理视图中应显示的相应信息。
In Class View, expand the project node to display the interface to which you want to add the method.
在[类别检视]中将专案节点展开，以显示要加入方法的介面。
From energy point of view, a bounded damping feedback control method is proposed to achieve chaos control by reducing system energy for a class of nonlinear system.
从能量角度提出了有界阻尼反馈控制方法，通过减少系统能量实现一类非线性系统的混沌控制。
From energy point of view, a bounded damping feedback control method is proposed to achieve chaos control by reducing system energy for a class of nonlinear system.
从能量角度提出了有界阻尼反馈控制方法，通过减少系统能量实现一类非线性系统的混沌控制。
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