我称之为expando列表。
Choosing between categories and expando.
在categories和expando之间选择。
You need to clear the expando states when the tree grid performs a sorting query.
当树型网格执行一个排序查询时，您需要清除expando状态。
After investigating, you find that the tree grid would always hold the states of expando functions.
调查之后，您发现树型网格总是保留expando函数的状态。
After the sorting action, the items were different, but the tree grid would still try to open the expando function of the fourth row.
排序之后，条目有所不同，但是属性网格仍然想要打开第4行的expando功能。
As a rule of thumb, if you find yourself wrapping more than three disparate chunks of code in a category, consider making it an expando.
一般说来，如果您发现自己在一个category中包装超过3个根本不同的代码块时，考虑使用expando。
Expandos, on the other hand, are global in nature: Once the expando code has executed, those changes appear for the rest of the application.
另一方面，Expandos本质上是全局的：一旦expando代码执行，这些改变将会出现在应用程序的其余部分中。
Beyond those examples we've seen so far, expando meta-classes also provide some complementary hooks. Four other kind of methods can be added to an expando meta-class.
除了我们已经看到的例子，expando元类也提供了一些补充的功能。
Beyond those examples we've seen so far, expando meta-classes also provide some complementary hooks. Four other kind of methods can be added to an expando meta-class.
除了我们已经看到的例子，expando元类也提供了一些补充的功能。
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