A major announcement for R developers interested in type safety, thoughts on using Visual Studio Code from the perspective of a long-time RStudio user, and the adventures of filling regions between lines with ggplot2. Episode Links This week's curator: Ryo Nakagawara (@RbyRyo (https://twitter.com/R_by_Ryo)) Introducing rpp: The long-term goal of the organisation is to add static type checking and other features to R, with zero cost at run time (https://blog.q-lang.org/posts/2021-10-13-release/) How not to be lost with VSCode when coming from RStudio? (https://statnmap.com/2021-10-09-how-not-to-be-lost-with-vscode-when-coming-from-rstudio/) Fill the region between two lines in ggplot2 (https://www.nsgrantham.com/fill-between-two-lines-ggplot2) Entire issue available at rweekly.org/2021-W42 (https://rweekly.org/2021-W42.html) Supplement Resources Type safety: https://en.wikipedia.org/wiki/Type_safety Eric's R development repository: https://github.com/rpodcast/rdevprojects Visual Studio Code R extension: https://github.com/REditorSupport/vscode-R Looking to provide feedback on this episode and the podcast in general? Feel free to get in touch with Mike (@mike_ketchbrook (https://twitter.com/mike_ketchbrook)) or Eric (@theRcast (https://twitter.com/rpodcast)) on Twitter!