What error handling methods are you familiar with in Go?

In Go, error handling is usually done through the returned error value. Functions return two values: the result and the error. If the error is not nil, it needs to be handled. This approach allows explicit error control.

Example:

func divide(a, b float64) (float64, error) {
    if b == 0 {
        return 0, fmt.Errorf("division by zero")
    }
    return a / b, nil
}

result, err := divide(10, 0)
if err != nil {
    fmt.Println("Error:", err)
} else {
    fmt.Println("Result:", result)
}

Go also has panics and recover, but they are used for critical errors, not for regular error handling.

Sometimes custom error types are used for more detailed information.