Category: R Books

FizzBuzz in R and Python

In this post, we will solve a simple problem (called “FizzBuzz”) that is asked by some employers in data scientist job interviews. The question seeks to ascertain the applicant’s familiarity...continue reading.

Piping is Method Chaining

What R users now call piping, popularized by Stefan Milton Bache and Hadley Wickham, is inline function application (this is notationally similar to, but distinct from the powerful interprocess communication...continue reading.


I would like to once again recommend our readers to our note on wrapr::let(), an R function that can help you eliminate many problematic NSE (non-standard evaluation) interfaces (and their...continue reading.

Unit Tests in R

I am collecting here some notes on testing in R. There seems to be a general (false) impression among non R-core developers that to run tests, R package developers need...continue reading.

gower 0.2.0 is on CRAN

A new version of R package gower has just been released on CRAN. Thanks to our new contributor David Turner who was kind enough to provide a pull request, gower...continue reading.