In the following section, I will introduce the already mentioned simple example of reading a shopping cart and analyzing it to find patterns that improve performance.
在下面的部分中，我将介绍前面提到过的那个简单实例，它读取一个购物车并进行分析，找出提高性能的模式。
The advantages of closures go beyond saving a few lines of code, and the usage patterns go beyond simple iteration.
闭包的好处远不止是节省几行代码，它的使用模式也远不止是简单的迭代。
We have discussed the various data access patterns that are supported and the basic usage scenarios, and we have demonstrated examples ranging from very simple to somewhat complex.
我们讨论了所支持的各种数据访问模式和基本使用场景，并给出了非常简单的示例和较为复杂的示例。
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