第1部分的清单6中的属性文件演示了另一个原因，该文件组合了用户和角色。

Another reason is demonstrated by the properties file in Part 1, Listing 6, which combines users and roles.

youdao

该目录中的各个. dem文件演示了各个函数，all . dem将它们一次全部加载。

Individual.dem files in this directory demonstrate individual functions, and all.dem loads them all one at a time.

youdao

他可以上传多个文件并在演示期间在这些文件之间切换。

He can upload multiple files and switch between the files during his presentation.

youdao

LS And what very often happens if you do an LS in your account, to list your files, there's a whole lot of stuff in here at the moment -- and I don't have it here - but what you'll often see -- I'll just fake this demo -- is a file called core.

经常发生的是，如果你用你的账号做一个，来列出你的文件，此刻这里有一大堆元素,-它不在这里,但你们将经常看到--我将篡改这个演示-,是一个叫做core的文件。

哈佛公开课 - 计算机科学课程节选