I found this code to swap two numbers without using a third variable, using the XOR ^ operator. Code: int i = 25; int j = 36; j ^= i; i ^= j; j ^= i; Console.WriteLine("i:" + i + " j:" + j); //numbers Swapped correctly //Output: i:36 j:25 Now I changed the above code to this equivalent code. My Code: int i = 25; int j = 36; j ^= i ^= j ^= i; // I have changed to this equivalent
我发现这个代码使用XOR ^操作符来交换两个数字而不使用第三个变量。 码： int i = 25; int j = 36; j ^= i; i ^= j; j ^= i; Console.WriteLine("i:" + i + " j:" + j); //numbers Swapped correctly //Output: i:36 j:25 现在我将上面的代码改为这个等效的代码。 我的代码： int i = 25; int j = 36; j ^= i ^= j ^= i; // I have changed to this equivalent (???). Console.WriteLine("i:" + i + " j:" +
Data sent from client will not get deserialized. Client: $.ajax({ type: 'POST', dataType: "json", url: 'savecommentsservice', data: { "Pid": 0, "Comments": [{ "User": "bbbbbb", "Text": "aaaaaaaa" }, { "User": "ddddddd", "Text": "ccccccccc"}] }, DTO: public class Comment { public string User { get; set; } public string Text { get; set; } } public class SaveComments
从客户端发送的数据不会被反序列化。 客户： $.ajax({ type: 'POST', dataType: "json", url: 'savecommentsservice', data: { "Pid": 0, "Comments": [{ "User": "bbbbbb", "Text": "aaaaaaaa" }, { "User": "ddddddd", "Text": "ccccccccc"}] }, DTO： public class Comment { public string User { get; set; } public string Text { get; set; } } public class SaveCommentsRequest {
I'm trying to convert a project that is currently using a custom DAO framework to using Entity Framework. The system is quite large so changes to the database (a SQL Azure DB if that matters) itself aren't particularly feasible and should be avoided if possible. The problem is with the ID column. Unfortunately when the system was created, there are some tables that have a bigint datat
我试图将当前使用自定义DAO框架的项目转换为使用实体框架。 该系统非常大，因此对数据库（如果有问题的话，SQL Azure DB）的更改本身并不是特别可行，应尽可能避免。 问题在于ID列。 不幸的是，当系统被创建时，有些表具有bigint数据类型，有些表具有int - 但是模型本身都来自基类，这些基类具有很long的ID。 以前的框架能够处理这种情况，但我一直无法找到一种方法来处理实体框架。 下面是我能想到的最微不足道的例子：
I recently learned about the DI frameworks Guice and Ninject and wanted to use them in some of my new projects. While I am familiar with general dependency injection concepts and know how to use those frameworks to construct object graphs, I struggle to apply IoC when it comes to dynamic application behavior. Consider this example: When the application starts, the main window will be shown.
最近我了解了DI框架Guice和Ninject，并希望在我的一些新项目中使用它们。 虽然我熟悉一般的依赖注入概念并知道如何使用这些框架来构建对象图，但我很难在动态应用程序行为中应用IoC。 考虑这个例子： 当应用程序启动时，主窗口将显示。 当用户点击主面板时，会打开一个上下文菜单。 根据用户的选择，将创建一个新的用户控件并显示在鼠标位置。 如果用户最终决定关闭应用程序，将会显示一个确认框，并且在确认后 - 主
Looking for any recent examples using OAuth with OData pref. from a WPF client without AppFabric or other dependencies found this year+ old article http://blogs.msdn.com/b/astoriateam/archive/2011/01/20/oauth-2-0-and-odata-protecting-an-odata-service-using-oauth-2-0.aspx which requires AppFabric another from DevEx also a year+ old but the sample doesn't compile http://community.devex
寻找最近使用OData pref的OAuth示例。 来自没有AppFabric或其他依赖项的WPF客户端 发现今年+旧文章 http://blogs.msdn.com/b/astoriateam/archive/2011/01/20/oauth-2-0-and-odata-protecting-an-odata-service-using-oauth-2-0.aspx 这需要AppFabric 另一个来自DevEx也是一年+年，但样本不编译http://community.devexpress.com/blogs/theonewith/archive/2011/02/24/odata-and-oauth-part-1-introduction.aspx 所有
I come from a .NET world. Now entering these frigid php waters. I found an example that got me a little confused. Of course, I am trying to apply OOP fundamentals to this php code but it doesn't make sense. This is the class i am talking about. <?php namespace appmodels; class User extends yiibaseObject implements yiiwebIdentityInterface { public $id; public $username;
我来自.NET世界。 现在进入这些寒冷的PHP水域。 我发现一个让我有点困惑的例子。 当然，我正在尝试将OOP基础应用于此PHP代码，但它没有任何意义。 这是我正在谈论的课程。 <?php namespace appmodels; class User extends yiibaseObject implements yiiwebIdentityInterface { public $id; public $username; public $password; public $authKey; private static $users = [ '100' =>
I'm attempting to write a thread-safe method which may only be called once (per object instance). An exception should be thrown if it has been called before. I have come up with two solutions. Are they both correct? If not, what's wrong with them? With lock : public void Foo() { lock (fooLock) { if (fooCalled) throw new InvalidOperationException(); fooCalle
我试图编写一个线程安全的方法，它只能被调用一次（每个对象实例）。 如果之前被调用过，应抛出异常。 我提出了两个解决方案。 他们都是对的吗？ 如果没有，他们有什么问题？ lock ： public void Foo() { lock (fooLock) { if (fooCalled) throw new InvalidOperationException(); fooCalled = true; } … } private object fooLock = new object(); private bool fooCalled; 通过Inte
Today I got a really strange problem. Try to execute this C# code: class Program { static void Main(string[] args) { string yesterdayString = (DateTime.Now - TimeSpan.FromDays(1)).ToString("R"); string nowString = DateTime.Now.ToString("R"); DateTime.Parse(yesterdayString); DateTime.Parse(nowString); DateTime.Parse("Wed, 29 Feb 2012 18:05:49 G
今天我遇到了一个非常奇怪的问题。 尝试执行此C＃代码： class Program { static void Main(string[] args) { string yesterdayString = (DateTime.Now - TimeSpan.FromDays(1)).ToString("R"); string nowString = DateTime.Now.ToString("R"); DateTime.Parse(yesterdayString); DateTime.Parse(nowString); DateTime.Parse("Wed, 29 Feb 2012 18:05:49 GMT"); // this
While browsing some source code I came across a function like this: void someFunction(char someArray[static 100]) { // do something cool here } With some experimentation it appears other qualifiers may appear there too: void someFunction(char someArray[const]) { // do something cool here } It appears that qualifiers are only allowed inside the [ ] when the array is declared as a param
在浏览一些源代码时，我遇到了这样的功能： void someFunction(char someArray[static 100]) { // do something cool here } 通过一些实验，看起来其他限定符也可能出现在那里： void someFunction(char someArray[const]) { // do something cool here } 当数组被声明为函数的参数时，似乎限定符只允许在[ ]内。 这些做什么？ 为什么功能参数不同？ 第一个声明告诉编译器someArray 至少有 100个元素长。 这可
I know the standard way of using the Null coalescing operator in C# is to set default values. string nobody = null; string somebody = "Bob Saget"; string anybody = ""; anybody = nobody ?? "Mr. T"; // returns Mr. T anybody = somebody ?? "Mr. T"; // returns "Bob Saget" But what else can ?? be used for? It doesn't seem as useful as the ternary operator, apart from being more concise and e
我知道在C＃中使用空合并运算符的标准方式是设置默认值。 string nobody = null; string somebody = "Bob Saget"; string anybody = ""; anybody = nobody ?? "Mr. T"; // returns Mr. T anybody = somebody ?? "Mr. T"; // returns "Bob Saget" 但还有什么可以?? 用于？ 它看起来并不像三元操作符那么有用，除了更简洁易读之外，还不如： nobody = null; anybody = nobody == null ? "Bob Saget" : nobody; // returns B