We speak to Carola Nitz about debugging iOS apps, managing legacy code in big projects, and organizing a Swift conference. Detailed topics: Introduction What are the most common problems with debugging in iOS?  What are the core tools for debugging iOS apps?  How can you get started using Instruments?  What is the best way to approach debugging a bigger problem? Tips for memory debugging  Which parts of Instruments are useful for debugging? How could Apple make debugging better? What counts as legacy code? How to add new features to iOS 13 while still supporting iOS 12 and earlier?  Techniques for keeping old code working What skills do you need for large projects? How can you maintain feature parity between iOS and Android apps?  What separates a good event from a great event?   How to assemble a diverse conference speaker line up? What works better for learning: workshops or presentations? Tips for attending a conference if you are an introvert  How to start organizing an event? Wrap up