func AssInterface(p interface{}) {
	switch p.(type) {
	case int:
		fmt.Println("is integer data")
	case string:
		fmt.Println("is string data")
	case bool:
		fmt.Println("is bool data")
	default:
		fmt.Println("unknow type")
	}

}
AssInterface("hello 世界")  // is string data
AssInterface(true)         // is bool data
AssInterface(123)          // is integer data