函数式编程的核心是函数，就像面向对象语言的主要抽象方法是类。
At the core of functional programming is the function, just as classes are the primary abstraction in object-oriented languages.
Web服务是适于销售的函数，可以使用任何平台和任何编程语言访问它们。
Web services are sellable functions that can be accessed independent of platforms and programming languages.
php的array _ filter是函数式编程语言中高阶函数的一个例子。
PHP's array_filter is an example of what is know in functional programming as a higher-order function.
应用推荐