Error Handling: errors.New, Wrapping & Custom Types | Go Tutorial #19
Learn error handling in Go! This lesson covers everything from basic error creation to custom error types.
📚 What you'll learn:
Creating errors with errors.New
Returning errors from functions
Error wrapping with fmt.Errorf and %w
Checking errors with errors.Is
Custom error types with errors.As
Sentinel error patterns
Go uses explicit error returns instead of exceptions, making error handling predictable and clear.
⏱️ Timestamps:
0:00 - Introduction
0:27 - Error Basics (errors.New, returning errors)
3:12 - Error Wrapping (fmt.Errorf, %w, Unwrap)
5:53 - Checking Errors (errors.Is, sentinel errors)
8:58 - Custom Error Types (errors.As)
12:08 - Recap
12:45 - Up Next: Defer, Panic, Recover
💻 Code: https://github.com/GoCelesteAI/go_errors
🔔 Subscribe for more Go tutorials!
#golang #go #programming #tutorial #errorhandling #coding #learntocode