Xcode Debugging (Udacity)

Debugging is one of the most fundamental processes involved in writing software. Nobody writes perfect code, and job-ready developers should know how to find and fix programming errors.

In this course, you'll learn standard methodologies for debugging software—especially for iOS applications. Additionally, you'll learn how to use Xcode’s debugging tools (breakpoints, LLDB, etc.) to squash those bugs!

What You Will Learn

Lesson 1

Debugging, Printing, Logging

- Learn about the difference between warnings and errors in Xcode.

- Look at an example app riddled with bugs to troubleshoot.

- Outline a debugging process and use print statements to identify bugs.

Lesson 2

Stepping Through Code

- Learn how to use breakpoints in Xcode.

- Examine application state and stack frames during the execution of an application.

- Diagnose and understand run-time problems using Xcode's debugging tools.

Lesson 3

LLDB and Breakpoint Actions

- Learn about LLDB (low-level debugger)—the debugging super tool.

- Use LLDB commands to investigate issues in code.

- Add actions to breakpoints to improve your debugging workflow.

Lesson 4

Breakpoints and Visual Tools

- Set special exception and symbolic breakpoints.

- Use Xcode's visual debugging tools to fix user interface problems.

- Practice debugging and fixing issues in an existing application.