快捷键 https://blog.csdn.net/lord_is_layuping/article/details/54236924 cheatsheet
efficient programing in R https://csgillespie.github.io/efficientR/set-up.html#rstudio
R 与 matlab 语句对比 http://mathesaurus.sourceforge.net/octave-r.html
R studio 主题 1)集合 https://awesomeopensource.com/project/mkearney/rstudiothemes?categoryPage=5
2)Theme: rscodeio (推荐) https://github.com/anthonynorth/rscodeio 2.1) Switching to another theme rscodeio modifies UI elements that are not part of standard theming. This means the RStudio file menus will remain dark even if you switch to another theme. To revert them, within an RStudio session run as administrator, use: rscodeio::deactivate_menu_theme. Reactivate again with: rscodeio::activate_menu_theme.
syntax and probability basis(type 1/2 errors) https://bookdown.org/ndphillips/YaRrr/
from tianyishi2001 不错的shu https://tianyishi2001.github.io/r-and-tidyverse-book/index.html （判断和循环！！！https://tianyishi2001.github.io/r-and-tidyverse-book/control-flow.html#control-flow-rigorous）
https://yufree.github.io/sciguide/data.html#%E7%AE%97%E6%B3%95
R语言初级教程（1-23） https://www.zhihu.com/people/liu-juan-79-17/posts?page=1 (如何找到你要的包：https://cran.r-project.org/web/views/ ; 判断和循环https://zhuanlan.zhihu.com/p/110022769)
R 笔记 补充上面的R语言初级教程（1-23） https://blog.csdn.net/qy_microbiota?t=1 其中包括 ###debug 内容，同样的 https://rstudio-education.github.io/hopr/debug.html 也有 debugg 内容。另外的，他还有speeding的内容：基本就是说vectorize and 预先分配内存，不要grow vector/matrix....
https://zhuanlan.zhihu.com/p/70502734
https://r4ds.had.co.nz/r-markdown.html
csdn下的笔记参考书籍 https://bookdown.org/rdpeng/rprogdatascience/