Debugging and defensive programming

Overview

• Define a bug
• Review best practices for reading, writing, and styling code
• Interpret function documentation
• Distinguish between errors, warnings, and messages
• Introduce traceback() and explain how to read it
• Identify and practice methods for error handling and recovery

Before class

• Read Debugging R code in What They Forgot to Teach You About R
• Skim/read The tidyverse style guide
• Read How to read an R help page
• Review 21.6 Dealing with failure in R for Data Science

Class materials

• Bugs and styling code

• Debugging and condition handling

• Naming things - by Jenny Bryan. A concise guide to naming files.

What you need to do after class