References

Knuth, Donald E. 1984. “Literate Programming.” Comput. J. 27 (2): 97–111. https://doi.org/10.1093/comjnl/27.2.97.

https://dplyr.tidyverse.org/

https://dplyr.tidyverse.org/articles/dplyr.html

https://r4ds.had.co.nz/transform.html