不管你是阅读一个编程实例，还是理解某个进程的前因后果，或者是阅读新章节的前文介绍，作者的行文风格与形式都使得读者更易掌握新的概念。

Whetheryou're reading an example program, learning the background to a particularprocess, or being introduced to a new chapter, the style and form used allowthe reader to grasp concepts quickly.

youdao

为了介绍 Perl/Tk 编程的基本概念，先让我们考虑大家熟知的“Hello, world”程序，在 Perl/Tk 中，该程序类似如下

To introduce the basic concepts of programming with Perl/Tk, let's consider the proverbial "Hello, world" program, which in Perl/Tk looks like this

youdao

Wikipedia为lisp和scheme语言提供了很好的介绍以及为功能性编程概念提供了一般介绍(和MapReduce)。

Wikipedia provides great introductions to the Lisp and Scheme languages as well as a general introduction to functional programming concepts (and MapReduce).

youdao

As every time we introduce a new programming concept, we'll relate it back, as we have been doing consistently, to defensive programming.

我们每次介绍一个,新的编程概念的时候，就会和以前讲的联系起来，就和我们介绍防卫性程序设计一样。

麻省理工公开课 - 计算机科学及编程导论课程节选

PROFESSOR: Last time, Professor Guttag introduced the idea of objects and classes and this wonderful phrase called object-oriented programming.

教授：上节课，Guttag教授,介绍了对象和类的概念以及,面向对象编程这个美妙的短语,这是我今天想继续讲的一个话题。

麻省理工公开课 - 计算机科学及编程导论课程节选