To design a TableViewer demo application, you must create a data model class.

要设计TableViewer演示应用程序，您必须创建数据模型类。

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To design a TreeViewer demo application, you must create your node class as your data model.

要设计TreeViewer演示应用程序，您必须创建节点类作为数据模型。

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The first live demo is about Ruby2Ruby (6:28) and turns a Rails model class back into ruby code to see the magic Rails worked.

首先演示了一个关于Ruby2Ruby的例子(6：28)，然后把一个Rails模型类转变成ruby代码，由此看看神奇的Rails是如何运作的。

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Noone cared about the Androids except a couple young girls who were waiting for me to stop playing with the demo model.

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The instant demo model also makes sense for big budget commercial software -- imagine if you could try a new video editing suite online, for instance.

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Follow the break for the epic demo, and pay special attention to the white model when the rep pulls it out -- the back was supposed to be stylized Morse code that reads "I love Friday nights, " but apparently they ran out of space, so it's now just random dots on a cover.

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