升级到ASP.NET Core 2.0后,我似乎无法再创建迁移.
我越来越
"在类'Program'上调用方法'BuildWebHost'时发生错误.继续没有应用服务提供者.错误:发生了一个或多个错误.(无法打开登录请求的数据库"...".登录失败.登录用户'...'失败
和
"无法创建'MyContext'类型的对象.将'IDesignTimeDbContextFactory'的实现添加到项目中,或者参见 https://go.microsoft.com/fwlink/?linkid=851728以获取在设计时支持的其他模式."
我之前运行的命令是$ dotnet ef migrations add InitialCreate --startup-project "..\Web"(来自带有DBContext的项目/文件夹).
连接字符串: "Server=(localdb)\\mssqllocaldb;Database=database;Trusted_Connection=True;MultipleActiveResultSets=true"
这是我的Program.cs
public class Program
{
public static void Main(string[] args)
{
BuildWebHost(args).Run();
}
public static IWebHost BuildWebHost(string[] args) =>
WebHost.CreateDefaultBuilder(args)
.UseStartup<Startup>()
.Build();
}
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我想输入一个字符串列表,并使用python函数sort()或按出现的字符对它们进行排序sorted()。我可以在编写自己的排序函数的许多代码行中做到这一点,我只是不确定如何在python中如此轻松地做到这一点
就sorted()其而言可以取列表和关键
l = ['a', 'wq', 'abababaaa']
#I think it's something like this, I know I'm missing something
sorted(l, key = count('a'))
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预期的结果将是
['wq', 'a', 'abababaaa']
Run Code Online (Sandbox Code Playgroud) 我想垂直对齐左侧元素,并与带有填充的右侧元素相同,这就是我得到的结果,元素未对齐,并且我无法在第二行中插入填充,以便左侧元素对齐
return InkWell(
child: Column(
children: <Widget>[
Row(
children:<Widget> [
Padding(padding:EdgeInsets.fromLTRB(18.0, 0.0, 0.0, 0.0)),
Text(
product.libelle,
style: theme.textTheme.title,
maxLines: 1,
textAlign: TextAlign.left,
),]),
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children:<Widget> [
Text(
product.description,
style: theme.textTheme.subtitle,
maxLines: 1,
),
RaisedButton( onPressed: () {},
child: new Text("S\'abonner"),
)
]),
),
);
Run Code Online (Sandbox Code Playgroud) 使用 stack deploy 启动服务时,我们收到以下错误:
“来自守护进程的错误响应:rpc 错误:代码 = 3 desc = EndpointSpec:以入口模式发布的端口不能与 dnsrr 模式一起使用”
测试让我尝试:使用ignress=falseset手动创建网络,在不公开端口的情况下启动堆栈部署并将节点加入网络,然后手动公开端口。
docker service update --publish-add 5672:5672 service_name1
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但仍然得到同样的错误。
有什么想法吗?
我目前正在开发我的第一个 React 应用程序,但我正面临一些困难(对我而言)。
<div
className="container-fluid"
id="cityDetail"
style={{
backgroundImage: `url(${camera.lastPhoto})`,
backgroundRepeat: "no-repeat",
backgroundPosition: "center",
backgroundSize: "cover",
height: "100vh"
}}
>
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我想延迟加载 backgroundImage。
我还没有找到好的组件/实用程序来做到这一点。有没有人有任何想法?
当尝试连接到我的工作站上本地运行的 postgres 时,我得到:
$ sudo -u postgres psql -c "create role ..."
could not change directory to "/home/esauer/workspace/cfme"
psql: could not connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket "/tmp/.s.PGSQL.5432"?
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我的 postgres-server 安装在/var/run/postgresql.
如何让客户看向正确的位置?
当我尝试执行以下操作时:
sudo apt-get install ros-kinetic-desktop-full
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我收到以下错误:
E: Unable to locate package ros-kinetic-desktop-full
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然后,我尝试寻找一种解决方法,从源安装它,一旦运行rosdep install --from-paths . -i -y --rosdistro kinetic,它将引发以下错误:
executing command [sudo -H apt-get install -y ros-kinetic-gazebo-dev]
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package ros-kinetic-gazebo-dev
ERROR: the following rosdeps failed to install
apt: command [sudo -H apt-get install -y ros-kinetic-gazebo-dev] failed
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任何想法出什么问题了吗?
我想将 git diff shell 脚本的输出检索到变量中,然后在其上运行用户定义的函数。我如何声明我想要编写的这些函数以及如何使用它们?
pipeline{
agent any
parameters {
string(name: 'branchA', defaultValue: 'master', description: 'Comapare which branch?')
string(name: 'branchB', defaultValue: 'dev', description: 'Compare with which branch?')
}
stages {
stage('Build') {
steps{
checkout([$class: 'GitSCM',
branches: [[name: '*/master']],
doGenerateSubmoduleConfigurations: false,
extensions: [[$class: 'CleanBeforeCheckout']],
submoduleCfg: [],
userRemoteConfigs: [[credentialsId: 'gitCreds', url: "https://github.com/DialgicMew/example.git"]]])
sh "git diff --name-only remotes/origin/${params.branchA} remotes/origin/${params.branchB}"
}
stage('Functions on the result') {
steps{
echo "Functions to be used here"
}
}
}
}
```
Run Code Online (Sandbox Code Playgroud) - cookieconsent version: 3.1.1\n- ngx-cookieconsent version: 2.2.3\n- Angular CLI: 10.0.3\n- Angular SSR (universal)\nRun Code Online (Sandbox Code Playgroud)\n\n我正在运行以下命令:
\nnpm run build:ssr && npm run serve:ssr\nRun Code Online (Sandbox Code Playgroud)\n在哪里:
\n"serve:ssr": "node dist/compy/server/main.js",\n\n"build:ssr": "ng build --prod && ng run compy:server:production",\nRun Code Online (Sandbox Code Playgroud)\nNode Express server listening on http://localhost:4000\n\nERROR TypeError: Cannot read property 'initialise' of undefined\n at NgcCookieConsentService.init (C:\\Coding\\compyFront\\dist\\compy\\server\\main.js:1:3482889)\n at new NgcCookieConsentService (C:\\Coding\\compyFront\\dist\\compy\\server\\main.js:1:3482119)\n at Object.NgcCookieConsentService_Factory [as factory] (C:\\Coding\\compyFront\\dist\\compy\\server\\main.js:1:3484065)\n at R3Injector.hydrate (C:\\Coding\\compyFront\\dist\\compy\\server\\main.js:1:2802301)\n at R3Injector.get (C:\\Coding\\compyFront\\dist\\compy\\server\\main.js:1:2799033)\n at NgModuleRef$1.get (C:\\Coding\\compyFront\\dist\\compy\\server\\main.js:1:2977443)\n at Object.get (C:\\Coding\\compyFront\\dist\\compy\\server\\main.js:1:2946537)\n at …Run Code Online (Sandbox Code Playgroud) server-side-rendering angular-universal angular cookieconsent
我有一个 API 的三个路径变量。我想用 ***** 屏蔽 Swagger UI 上的一个输入。
使用 Springdoc OpenAPI 时如何做到这一点?
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