In this example, you can see this issue right away. There are two of the exact same widgets!
在这个例子中,您可以直接看到问题,有两个完全相同的小部件!
For more discussion on this issue, see my article "The Null Flag Bug Pattern".
关于这个问题的更多讨论,请参阅我的文章《空标志错误模式》。
As we see, this issue really complicates the process of extending our application.
我们看到,这个问题的确让应用的扩展变得复杂起来。
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