Pathfinder is an example of what programmers call functions, subroutines, or procedures.

Pathfinder 是程序员称、子例程或过程的示例。

To compartmentalize and hide complexity, programming languages can package pieces of code into named functions, also called methods or subroutines in different programming languages.

了划分和隐藏复杂性， 编程语言可以将代码片打包成命名，在不同的编程语言中也称方法或子例程。

So basically, what you've done, is maintained your framework - " I'm going to work through this class" , but you've decided to modify some of the subroutines, that make up that frame.

所以基本上， 你所做的是维护你的框架——“我将完成这个类”，但你已经决定修改一些子程序， 这些子程序构成了那个框架。