这个异常是在使用EasyNetQ时,遇到的问题,找了两个小时. 详细错误 Error:System.TimeoutException: The operation requested on PersistentChannel timed out. 在 EasyNetQ.Producer.ClientCommandDispatcherSingleton.Invoke[T](Func` channelAction) 在 EasyNetQ.Producer.ClientCommandDispatche…

如下直接在 MaterialApp 中使用 Navigator 是会报 Navigator operation requested with a context that does not include a Navigat. ... 修改为如下所示,将要使用路由的部分嵌套一层即可正常使用. 总结:要使用 路由(Navigator),根控件不能直接是 MaterialApp. 解决方法:将 MaterialApp 内容再使用 StatelessWeight 或 StatefulWeight 包裹…

我在使用flutter里的对话框控件的时候遇到了一个奇怪的错误 Another exception was thrown: Navigator operation requested with a context that does not include a Navigator 研究了一下才知道,flutter里的dialog不是随便就能用的. 原代码如下: import 'package:flutter/material.dart'; main() { runApp(new MyApp())…

import 'package:flutter/material.dart'; void main() => runApp(MyApp()); class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( home: Center( child: RaisedButton( child: Text("Test"), onPressed…

Shouldly是一个轻量的断言(Assertion)框架,用于补充.NET框架下的测试工具.Shouldly将焦点放在当断言失败时如何简单精准的给出很好的错误信息. Shouldly在GitHub的开源地址:https://github.com/shouldly/shouldly Shouldly的官方文档:http://docs.shouldly-lib.net/ 为什么要Shouldly? 我们知道通常测试代码中一个断言是这样写的: Assert.That(contestant.Point…

DateOnly & TimeOnly .NET 6 引入了两种期待已久的类型 - DateOnly 和 TimeOnly, 它们分别代表DateTime的日期和时间部分. DateOnly dateOnly = new(2021, 9, 25); Console.WriteLine(dateOnly); TimeOnly timeOnly = new(19, 0, 0); Console.WriteLine(timeOnly); DateOnly dateOnlyFromDate = Date…

很明显,以下的文字来自微软MSDN 链接http://msdn.microsoft.com/en-us/library/windows/desktop/ms681382(v=vs.85).aspx MSDN上分成了几个部分,查起来费事,统一放在这里了. 用kernel32.dll里的FormatMessage可以得到支持多语言的返回消息 有人把这些错误代码整理成了类,供参考 http://www.cnblogs.com/Sabre/p/3929264.html Note The informat…

A mechanism is provided in a data processing system for reliable asynchronous solid-state device based de-duplication. Responsive to receiving a write request to write data to the file system, the mechanism sends the write request to the file system,…

1 Protection Profile Introduction   This document defines the security functionality expected to be provided by a general-purpose operating system capable of operating in a networked environment. It also provides a set of assurance components that de…

A file system layout apportions an underlying physical volume into one or more virtual volumes (vvols) of a storage system. The underlying physical volume is an aggregate comprising one or more groups of disks, such as RAID groups, of the storage sys…