测试字符串是否为guid而不抛出异常？

func isStringGuid(s string) bool {
    _, err := Guid.Parse(s)
    return err == nil
}

func main() {
    guidStr := "01234567890123456789012345678901"
    isGuid := isStringGuid(guidStr)
    if isGuid {
        fmt.Println(guidStr, "is a GUID")
    } else {
        fmt.Println(guidStr, "is not a GUID")
    }
}