golang関数の戻り値の型変換

func GetValue() interface{} {
    return "Hello, world!"
}

func main() {
    value := GetValue()
    // 检查 value 是否为字符串类型
    if str, ok := value.(string); ok {
        fmt.Println(str) // 输出: Hello, world!
    }
}

func main() {
    var num float64 = 3.14
    // 将 float64 转换为 int
    numInt := int(num)
    fmt.Println(numInt) // 输出: 3
}

func GetEmployeeInfo() (string, int) {
    return "John Doe", 30
}

func main() {
    name, age := GetEmployeeInfo()

    // 将 age 转换为 string 类型
    ageStr := strconv.Itoa(age)
    fmt.Println("Employee Name:", name)
    fmt.Println("Employee Age:", ageStr)
}

Employee Name: John Doe
Employee Age: 30