In what circumstances (usage scenarios) would you choose to write an extension rather than sub-classing an object ? < full disclosure : I am not an MS employee; I do not know Mitsu Furota personally; I do know the author of the open-source Componax library mentioned here, but I have no business dealings with him whatsoever; I am not creating, or planning to create any commercial product u
在什么情况下(使用场景)你会选择编写扩展而不是对对象进行子分类? <全面披露:我不是MS员工; 我亲自不认识Mitsu Furota; 我确实知道这里提到的开放源代码Componax库的作者,但我与他无任何商业往来; 我没有创建或计划使用扩展创建任何商业产品:总而言之:这篇文章来源于纯粹的智力好奇心,与我试图(不断)意识到“最佳实践”相关> 我发现扩展方法“很酷”的想法,很明显,您可以在他们的Mitsu Furota(MS)博客链
A "non-believer" of C# was asking me what the purpose to extension methods was. I explained that you could then add new methods to objects that were already defined, especially when you don't own/control the source to the original object. He brought up "Why not just add a method to your own class?" We've been going round and round (in a good way). My general respo
C#的“非信徒”问我扩展方法的目的是什么。 我解释过,你可以将新方法添加到已经定义的对象中,特别是当你不拥有/控制原始对象的源时。 他提出了“为什么不给你的班级增加一种方法?” 我们一直在围绕(以一种好的方式)。 我的一般回应是,它是工具栏中的另一个工具,他的回答是无用的工具浪费......但我想我会得到一个更“开明”的答案。 您使用过的扩展方法的一些场景(您不可能拥有或不应该使用)添加到您自己的类中的方法
I tried running a script localwindows.ps1 from C# using the following Code : PSCredential credential = new PSCredential(userName, securePassword); WSManConnectionInfo connectionInfo = new WSManConnectionInfo(false, "machineName", 5985, "/wsman", shellUri, credential); using (Runspace runspace = RunspaceFactory.CreateRunspace(connectionInfo))
我尝试使用以下代码从C#运行脚本localwindows.ps1: PSCredential credential = new PSCredential(userName, securePassword); WSManConnectionInfo connectionInfo = new WSManConnectionInfo(false, "machineName", 5985, "/wsman", shellUri, credential); using (Runspace runspace = RunspaceFactory.CreateRunspace(connectionInfo)) {
Java在C#中的final是什么? The final keyword has several usages in Java. It corresponds to both the sealed and readonly keywords in C#, depending on the context in which it is used. Classes To prevent subclassing (inheritance from the defined class): Java public final class MyFinalClass {...} C# public sealed class MyFinalClass {...} Methods Prevent overriding of a virtual method.
Java在C#中的final是什么? final关键字在Java中有几种用法。 它对应于C#中的sealed和readonly关键字,具体取决于它使用的上下文。 类 防止继承(从定义的类继承): Java的 public final class MyFinalClass {...} C# public sealed class MyFinalClass {...} 方法 防止重写virtual方法。 Java的 public class MyClass { public final void myFinalMethod() {...} } C# public class MyClass : MyBas
This question already has an answer here: Difference between a method and a function 33 answers Function or a method is a named callable piece of code which performs some operations and optionally returns a value. In c language the term function is used. Java & C# people call these methods (and a function in this case is defined within a class/object). A C++ programmer might call it
这个问题在这里已经有了答案: 方法和函数之间的区别33答案 函数或方法是一个指定的可调用代码片段,它执行一些操作并可选择返回一个值。 在c语言中使用术语函数。 Java和C#人员调用这些方法(在这种情况下,函数是在类/对象中定义的)。 一个C ++程序员可能会把它称为一个函数或者有时是一个方法(取决于它们是在编写过程式c ++代码还是在做面向对象的c ++方式)。 你可以通过调用它的名称来调用一个函数,如result
This question already has an answer here: Difference between a method and a function 33 answers Both are same, there is no difference its just a different term for the same thing in C#. Method: In object-oriented programming, a method is a subroutine (or procedure or function ) associated with a class. With respect to Object Oriented programming the term "Method" is used, not
这个问题在这里已经有了答案: 方法和函数之间的区别33答案 两者都是一样的,没有什么区别,它只是C#中同一个事物的不同术语。 方法: 在面向对象的编程中, 方法是与类相关的子程序(或过程或函数 )。 关于面向对象编程,使用术语“方法”,而不是函数。 当一个函数是类的一部分时,它被称为方法。 C#是一种OOP语言,没有在类之外声明的函数,这就是为什么C#中的所有函数实际上都是方法。 尽管除了这种形式上
The question was about plain c functions, not c++ static methods, as clarified in comments. Ok, I understand what a static variable is, but what is a static function? And why is it that if I declare a function, let's say void print_matrix , in let's say ac (WITHOUT ah ) and include "ac" - I get "print_matrix@@....) already defined in a.obj" , BUT if I declare it as
问题是关于纯c函数,而不是c ++ static方法,正如评论中所阐明的那样。 好吧,我明白什么是static变量,但什么是static函数? 为什么如果我声明一个函数,让我们假设void print_matrix ,让我们说ac (没有ah ),并包括"ac" - 我得到了"print_matrix@@....) already defined in a.obj" ,但是,如果我声明它为static void print_matrix那么它编译? 更新只是为了清除一些事情 - 我知道包括.c在内的很
I want to know is it possible to put SignalR's Hub (s) in a different project than Asp.Net project? If it's yes. How can I access to a Hub classes? Thanks in advance. As far as I am aware, it is not possible to put a SignalR Hub in anything other than an ASP.NET project, seeing that SignalR is built on the ASP.NET framework, and lives within the ASP.NET namespace. I have not found
我想知道是否可以将SignalR的 Hub放在与Asp.Net项目不同的项目中? 如果是的话。 我如何访问Hub类? 提前致谢。 据我所知,除了ASP.NET项目之外,不可能将SignalR Hub放在其他任何设备上,因为SignalR建立在ASP.NET框架之上,并且位于ASP.NET命名空间中。 我没有发现任何相反的事情。 但是,由于Hub不需要在同一个项目中可供客户端访问 ,因此任何.NET或Java-Script客户端都可以使用适当的配置连接到集线器。 此链接
I have a windows forms app with a textbox control that I want to only accept integer values. In the past I've done this kind of validation by overloading the KeyPress event and just removing characters which didn't fit the specification. I've looked at the MaskedTextBox control but I'd like a more general solution that could work with perhaps a regular expression, or depend on t
我有一个窗体应用程序与一个文本框控件,我只想接受整数值。 在过去,我通过重载KeyPress事件来完成这种验证,并删除不符合规范的字符。 我已经看过MaskedTextBox控件,但我想要一个更通用的解决方案,可以使用正则表达式,或者依赖于其他控件的值。 理想情况下,这会表现为按下非数字字符将不会产生结果,或者立即向用户提供有关无效字符的反馈。 两种选择: 改为使用NumericUpDown 。 NumericUpDown为你做了过滤,这
I'm developing a console .NET client application to connect to our partner's remote server SAP PI over a https channel. Unfortunately we've faced many problems and I'm not sure what more to do. I will try explain as best as I can and if someone could help me I'd be very grateful! The remote server using SAP PI has the fictitious URL: https://dev.servereai30.server.com/XI
我正在开发一个控制台.NET客户端应用程序,通过https通道连接到我们的合作伙伴的远程服务器SAP PI。 不幸的是,我们遇到了很多问题,我不知道还有什么可做的。 我会尽力解释,如果有人能帮助我,我会非常感激! 使用SAP PI的远程服务器具有虚构的URL: https://dev.servereai30.server.com/XISOAPAdapter/MessageServlet?channel=B2B_MYENTERPRISE:PROJECT:SOAP_SND_MYENTERPRISE_Sellout 当我访问URL时,提供由我们的合