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。
Scala is a general purpose programming language designed to express common programming patterns in a concise, elegant, and type-safe way.
Scala是一种通用编程语言，它以简洁、优雅且类型安全的方式表达常用的编程模式。
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