摘要：
When I use the rstudio, it often prompts me a very long tip for me. It hinders me to write some comands. Thus, I use `export PS1=“$”` to short the tip 阅读全文
摘要：
This is my first time to use renv package. I want it can help me to keep the enivronment clean and robust. library(renv) When I run the command, which 阅读全文