# Prerequisites

This book offers solutions to Hadley Wickham’s book Advanced R. It is work in progress and under active development. The 2nd edition of Advanced R is still being revised, but we hope to provide a large part of the answers by the end of 2018.

The code for this book can be found on GitHub. We welcome your PRs and suggestions. :)

## Acknowledgements

A few of the solutions related to the 1st edition of Advanced R inherit from the work of Peter Hurford & Robert Krzyzanowski. Their GitHub-project Advanced R Book Solutions contains many solutions to Advanced R and is worth checking out. Additionally Peter also kindly contributed the Expressions-chapter.

We would also like to thank everybody else who contributed to this project by fixing typos, grammar or revising exercises: @caijun, @3zhang, @lotgon

## Current Progress

The date of the exercise versions in Hadley’s book (2nd edition) is October 6th 2018.

The formulation of the exercises in this book corresponds to Advanced R (1st edition) from January 25th 2017.