functions-post-08.go

type GreetingFn func(string) error

func SayGreetings(greetingFns []GreetingFn, name string) error {
	for _, greetingFn := range greetingFns {
		if err := greetingFn(name); err != nil {
			return err
		}
	}
	return nil
}

func main() {
	SayGreetings(
		[]GreetingFn{EnglishGreeting, SpanishGreeting},
		"World",
	)
}