[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8},"actionData","errors","root",{"_28":-5,"_38":-5,"_39":40,"_41":42,"_43":44,"_45":46,"_47":48,"_49":50,"_51":52,"_53":54,"_55":56,"_57":58},"routes/_store+/_readers+/email_author.$slug/route",{"_9":10,"_11":-5},"book",{"_12":13,"_14":15,"_16":17,"_18":19,"_20":21,"_22":23},"currentUser","id","Z2lkOi8vbGVhbnB1Yi9TdG9yZTo6Qm9va1Byb2R1Y3QvMjgzOTY","title","Functional programming and unit testing for data munging with R","state","retired","contactAuthorMethod","email","aboutText","

Most of the time spent working on a project is dedicated to preparing data for analysis. In this book, you will learn how to make this very important part of your work more streamlined and reproducible. We will learn about functional programming, unit testing and documenting your code in an automated way with the R programming language. The end goal is to write a package that contains all the needed functions to make your data tidy. This package will be extremely specific to your own needs and data, so you probably will not want to publish it on CRAN, however you can easily share this package with your colleagues or with your future self. This is especially useful if you are part of a project where you get yearly, quarterly or monthly data and need to repeat the same tasks over and over again. Having a thouroughly tested package makes sure that your fresh data gets tidied without any nasty surprises!

The book is still a work in progress. You can read it for free at www.brodrigues.co/fput. You can show your support by buying it on leanpub for any price, but the version on leanpub will not be always up-to-date. This is because I use bookdown to write the book, and converting the html files generated by bookdown to leanpub's markdown takes some time. However, once I'll finish the book, the version on leanpub will of course be completed and well formatted.

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Kick off your book project in 2 hours! Live workshop on Zoom. You’ll leave with a real book project, progress on your first chapter, and a clear plan to keep going. Tuesday, June 16, 2026. Learn more…

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