Chapter 12 Error Handling

• 12.1 panic! and unrecoverable errors
• 12.2 Result and recoverable errors
• 12.3 Propagating errors: the ? operator
• 12.4 Handling invalid input properly
• 12.5 When to panic and when to return Result
• 12.6 Custom error types: a first look
• 12.x Chapter 12 summary and quiz