The XPath interpreter also includes optimization features that extend the basic interpreter pattern of Gamma et al.

XPath解释器还包括扩展Gamma等的基本解释器模式的优化特性。

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Therefore, most implementations of the data federation pattern focus less on complex transformation capabilities and more on query optimization technologies.

因此，大部分数据联合模式的实现对复杂转换功能的关注相对较少，而更强调查询优化技术。

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A simple optimization to this code would be to apply the Singleton design pattern to class Empty, because every instance of Empty is identical.

这段代码的一个简单优化是对empty类应用同一个设计类型，因为每一个Empty的实例都是同样的。

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He sees the potential for Watson cousins customized with analytics for traffic-pattern optimization and emergency planning devoid of the emotions that bedevil mere people.

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