What are some advanced error handling techniques in Go?

What are some advanced error handling techniques in Go?

In Go, advanced error handling techniques include using custom error types, wrapping errors, and error handling middleware.

Can you explain how to create custom error types?

Sure! You can create a custom error type by defining a struct that implements the error interface, which requires a 'Error() string' method.

What is error wrapping and how is it useful?

Error wrapping allows you to add context to an error by using the 'fmt.Errorf' function with the '%w' verb, making it easier to trace the source of the error.

Are there any best practices for error handling in Go?

Yes, best practices include checking errors immediately after a function call, using sentinel errors for specific cases, and logging errors appropriately.