And the last piece I want you to see here, and then I'll let you go is, notice now how that encapsulation, that binding things together has really helped me.

我想要的那么干净，最后一点要给大家讲的是，也就是下课前讲的一点，就是请注意这里是怎么封装的,也就是把东西绑定在一起。

麻省理工公开课 - 计算机科学及编程导论课程节选