interfaces_code_snippet_11.go

type myError struct{}

func (m *myError) Error() string {
	return "failure"
}

func doSomething() (string, *myError) {
	return "", nil
}

func main() {
	var result string
	var err error
	if result, err = doSomething(); err != nil {
		fmt.Println("We have received an error!") // Prints "We have received an error!"
	} else {
		fmt.Println(result) // Is never called.
	}
}