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 (@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 How not to be lost with VSCode when coming from RStudio? Fill the region between two lines in ggplot2 Entire issue available at rweekly.org/2021-W42 Supplement Resources Type safety: https://en.wikipedia.org/wiki/Type_safety Eric's R development repository: https://github.com/rpodcast/r_dev_projects 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) or Eric (@theRcast) on Twitter!