What are the different types of errors in Go?

What are the different types of errors in Go?

In Go, errors are typically categorized into two types: built-in errors and custom errors. Built-in errors are returned by functions in the standard library, while custom errors are user-defined types that implement the error interface.

Can you explain how to create a custom error in Go?

Sure! To create a custom error in Go, you can define a new type that implements the error interface. For example:

type MyError struct {
    Message string
}

func (e *MyError) Error() string {
    return e.Message
}

This allows you to create instances of MyError and return them as errors.

What is the difference between panic and error in Go?

Panic is used for unrecoverable errors, causing the program to crash, while errors are used for recoverable conditions that can be handled gracefully.

How can I handle errors effectively in Go?

You can handle errors in Go by checking the error return value from functions. Use if err != nil to determine if an error occurred and take appropriate action.