We'll start with a mechanism by which you can express closures that embody a pattern of computation, which is a concept from functional programming.
我们先从一个机制开始，用这个机制可以表示包含计算模式的闭包，计算模式是一个来自函数式编程的概念。
Most rules engines let you use declarative programming to express the consequences that are valid given some information or knowledge.
大多数规则引擎允许您使用声明性编程来表达对于某些给定信息或知识有效的结果。
Programming in a specific language improves their understanding of the capabilities of the language and how to best express ideas in the specific coding idioms.
练习使用一种特定的语言来变成，能够提高他们对这门语言的功能的理解能力，以及如何将想法用代码最好的表达出来。
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