...Functions and Closures（函数和闭包） 函数的关键字是 func ，函数定义的格式是： funcfuncName(para:paraType) -> returnType{
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字面函数和闭包相关的概念会在《第8章- scala函数式编程》的“字面函数和闭包”章节中被讨论。
Function literals and the related concept of a closure are discussed in the section called "Function literals and Closures" in Chapter 8, Functional Programming in Scala.
这种情况下返回的函数对象就是一个闭包，其中封装了一些日志代码和最初的函数调用所需要的数据。
In this case the returned function object is a closure which encapsulates some logging code and the data needed to call the original function.
在本文中，我将继续讨论这些概念，讲解一级函数、优化和闭包。
In this article, I'll continue this tour of concepts by talking about first-class functions, optimizations, and closures.
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