试图在R版本3.4.4上安装'漩涡'。
得到以下答案：
Error in install.packages : cannot open file 'C:/Users/diego/Documents/R/win-library/3.4/file28904d8317d/assertthat/DESCRIPTION': Permission denied
packageVersion("swirl")
Error in packageVersion("swirl") : package ‘swirl’ not found
> library(swirl)
Error in library(swirl) : there is no package called ‘swirl’