文件撰寫中…
物件屬性
列表（List）與 data frames
函數
其他類型物件
缺失值
純量
字串
布林值
向量
Rcpp sugar
參考資料：Advanced R
https://cran.rstudio.com/web/packages/Rcpp/vignettes/Rcpp-introduction.pdf
https://support.rstudio.com/hc/en-us/articles/200486088-Using-Rcpp-with-RStudio
https://cran.rstudio.com/web/packages/Rcpp/vignettes/Rcpp-quickref.pdf
https://cran.rstudio.com/web/packages/Rcpp/vignettes/Rcpp-attributes.pdf
http://gallery.rcpp.org/
http://web.ydu.edu.tw/~alan9956/R/Rcpp-Rtools-tutorial.pdf
