我正在尝试将存储库克隆到我当前的目录中.但是,当我使用此命令克隆它时:
git clone REPOURL .
它说:
fatal: destination path '.' already exists and is not an empty directory.
我克隆的文件夹已经存在,我只想添加我在git repo中的文件.
有什么方法可以做到这一点吗？
谢谢
我正在尝试在我的Laravel实例上运行迁移.它们只是默认迁移(用户和密码重置),但是当它尝试生成时间戳时会抛出此错误:
[Illuminate\Database\QueryException]
SQLSTATE[42000]: Syntax error or access violation: 1067 Invalid default value for 'created_at' (SQL: create table `
users` (`id` int unsigned not null auto_increment primary key, `name` varchar(255) not null, `email` varchar(255) n
ot null, `password` varchar(60) not null, `remember_token` varchar(100) null, `created_at` timestamp default 0 not
null, `updated_at` timestamp default 0 not null) default character set utf8 collate utf8_unicode_ci)
以及PDOException:
SQLSTATE[42000]: Syntax error or access violation: 1067 Invalid default value for 'created_at'
我怎样才能解决这个问题？
谢谢.
我正在尝试使用PHP让我的Arduino发出信号.每当我运行下面的代码时,它会显示"无效的串口",虽然它有效吗？
<?php
include 'serial_connect.php';
$serial = new phpSerial;
$serial->deviceSet("COM2");
$serial->deviceOpen();
$serial->sendMessage("1000");
$serial->deviceClose();
?>
serial_connect.php类是php-serial,链接在这里:http://www.phpclasses.org/package/3679-PHP-Communicate-with-a-serial-port.html
这是我的Arduino草图:
int ledPin = 13;
void setup() {
pinMode(ledPin, OUTPUT);
Serial.begin(9600);
}
void loop() {
if(Serial.available() > 0) {
int time = Serial.parseInt();
digitalWrite(ledPin, HIGH);
delay(time);
digitalWrite(ledPin, LOW);
}
}
请帮忙.谢谢.
我将 Laravel 与Route::resource()控制器一起使用，并删除运行该函数所需的内容destroy()。此方法需要 DELETE HTTP 方法才能执行。如何通过单个按钮执行此操作？
谢谢
我刚刚买了一个Arduino Uno,我正在尝试制作一个闪烁的LED.我想知道如何做到这一点,我看了Arduino Playground并找到了一个程序来获取输入.我需要输出到Arduino.除了Java之外,我不可能使用任何东西,因为我已经有了另一个需要Arduino的程序.请留下任何想法.
当我运行一些代码(稍后显示)时,我告诉它检查字符串=="1",如果是,输出"它是1!",否则输出字符串.
码:
double shirt3 = Math.random() * 9;
String shirt2 = Double.toString(shirt3);
char shirt1 = shirt2.charAt(0);
String shirt = Character.toString(shirt1);
if(shirt == "1") {
System.out.println("It's 1!");
} else {
System.out.println(shirt);
}
输出:
7
4
8
1
7
1
7
7
6
0
我试图将一些文件添加到ZIP文件,它创建文件但不添加任何内容.代码1:
String fulldate = year + "-" + month + "-" + day + "-" + min;
File dateFolder = new File("F:\\" + compname + "\\" + fulldate);
dateFolder.mkdir();
String zipName = "F:\\" + compname + "\\" + fulldate + "\\" + fulldate + ".zip";
zipFolder(tobackup, zipName);
我的功能:
public static void zipFolder(File folder, String name) throws Exception {
byte[] buffer = new byte[18024];
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(name));
FileInputStream in = new FileInputStream(folder);
out.putNextEntry(new ZipEntry(name));
int len;
while((len = …我正在尝试扩展mysqli到我的命名空间之外。每当我运行它时，它都无法mysqli在命名空间内找到。如何访问mysqli命名空间之外的内容？
这是我的代码：
<?php
namespace xBell\Database;
class Database extends mysqli {
public function __construct() {
$hostname = \eBot\Config\Config::getInstance()->getMySQLIP();
$username = \eBot\Config\Config::getInstance()->getMySQLUser();
$password = \eBot\Config\Config::getInstance()->getMySQLPassword();
$database = \eBot\Config\Config::getInstance()->getMySQLIP();
parent::__construct($hostname, $username, $password, $database);
if(mysqli_connect_error()) {
\eBot\Printer\Printer::error("Unable to connect to the MySQL server! Error: " . mysqli_connect_error());
}
}
}
?>
谢谢！
我正在做一个用arduino制作响铃的项目,当我第一次尝试时,它的工作方式我想要它(wait(Serial.read())),但现在我需要0通过串口发送100 多个才能显示4秒 这是我的Java代码:
为长期做准备
Main.ringBell("100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000");
public static void ringBell(String length) throws Exception {
output.write(length.getBytes());
output.flush();
}
这是Arduino草图:
int ledPin = 13;
void setup() {
pinMode(ledPin, OUTPUT);
Serial.begin(9600);
}
void loop() {
if(Serial.available() > 0) {
digitalWrite(ledPin, HIGH);
delay(Serial.read());
digitalWrite(ledPin, LOW);
}
}
有没有人在我的代码中看到错误？如果是这样,请告诉我什么是错的,我会解决它.
谢谢.
我试图name从这块JSON中获取值:
{
"tournament": {
"id": 1605872,
"name": "eBotMatchMakerTest",
"event_id": null,
"participants": [
{
"participant": {
"id": 24899481,
"tournament_id": 1605872,
"name": "Team1",
"seed": 1,
"active": true,
"created_at": "2015-04-18T07:05:48.601-05:00",
"updated_at": "2015-04-18T07:05:48.601-05:00",
"invite_email": null,
"final_rank": null,
"misc": null,
"icon": null,
"on_waiting_list": false,
"invitation_id": null,
"group_id": null,
"checked_in_at": null,
"challonge_username": null,
"challonge_email_address_verified": null,
"removable": true,
"participatable_or_invitation_attached": false,
"confirm_remove": true,
"invitation_pending": false,
"display_name_with_invitation_email_address": "Team1",
"email_hash": null,
"username": null,
"display_name": "Team1",
"attached_participatable_portrait_url": null,
"can_check_in": false,
"checked_in": false,
"reactivatable": false
}
}
],
"matches": [ …