5.7 Debugging

It’s an eight line app, what could possibly go wrong? -Hadley Wickham (author)

The process of systematically comparing your expectations to reality until you find the mismatch. -Hadley Wickham (author)

• something will go wrong definitely.

• it takes years of experience to write code that works the first time (So, we need a robust workflow for identifying and fixing mistakes)

• Specific focus to three debugging challenges to Shiny apps