I'm finding massive performance differences between similar code in C anc C#. The C code is: #include <stdio.h> #include <time.h> #include <math.h> main() { int i; double root; clock_t start = clock(); for (i = 0 ; i <= 100000000; i++){ root = sqrt(i); } printf("Time elapsed: %fn", ((double)clock() - start) / CLOCKS_PER_SEC); } An
我发现C和C＃中的类似代码之间存在巨大的性能差异。 C代码是： #include <stdio.h> #include <time.h> #include <math.h> main() { int i; double root; clock_t start = clock(); for (i = 0 ; i <= 100000000; i++){ root = sqrt(i); } printf("Time elapsed: %fn", ((double)clock() - start) / CLOCKS_PER_SEC); } 而C＃（控制台应用程序）是： using Syste
In another question I asked, a comment arose indicating that the .NET framework's Array.Copy method uses unmanaged code. I went digging with Reflector and found the signature one of the Array.Copy method overloads is defined as so: [MethodImpl(MethodImplOptions.InternalCall), ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)] internal static extern void Copy(Array sourceArray
在我问的另一个问题中，出现了一条评论，指出.NET框架的Array.Copy方法使用非托管代码。 我使用Reflector进行挖掘，发现Array.Copy方法重载的签名之一定义如下： [MethodImpl(MethodImplOptions.InternalCall), ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)] internal static extern void Copy(Array sourceArray, int sourceIndex, Array destinationArray, int destinationIndex, int length, bool rel
Standard newbie disclaimer: I'm new to IoC and am getting mixed signals. I'm looking for some guidance on the following situation please. Suppose I have the following interface and implementation: public interface IImageFileGenerator { void RenameFiles(); void CopyFiles(); } public class ImageFileGenerator : IImageFileGenerator { private readonly IList<IImageLink> _
标准新手免责声明：我是IoC新手，收到混合信号。 我正在寻找一些关于以下情况的指导。 假设我有以下接口和实现： public interface IImageFileGenerator { void RenameFiles(); void CopyFiles(); } public class ImageFileGenerator : IImageFileGenerator { private readonly IList<IImageLink> _links; private readonly string _sourceFolder; private readonly string _destinationFolder;
I wonder what is the best way to organize working with database from C# code. I used to have different approaches for that: Each object has Save, Update and Delete methods, which implemented all the logic. There was some static class that has static methods Get, GetList, Update -- almost the same method as previous, but database logic was extracted from data domain class. Now I think it w
我想知道组织使用C＃代码处理数据库的最佳方式是什么。 我曾经有过不同的方法： 每个对象都有Save，Update和Delete方法，它们实现了所有的逻辑。 有一些静态类具有静态方法Get，GetList，Update - 几乎与以前一样，但数据库逻辑是从数据域类中提取的。 现在我认为为每个需要存储在某个地方的datadomain类设置一些非静态类，这将会非常棒，它将完成存储。 什么是最好的方式来做到这一点？ 有没有好的库提供良好的API
According to SOLID principles a class cannot depend on other classes, dependencies have to be injected. It's simple: class Foo { public Foo(IBar bar) { this.bar = bar; } private IBar bar; } interface IBar { } class Bar: IBar { } But what if I want my Foo class to be able to create Bar's, not knowing the exact implementation behind IBar? I can think of 4 so
根据SOLID原则，类不能依赖其他类，必须注入依赖关系。 这很简单： class Foo { public Foo(IBar bar) { this.bar = bar; } private IBar bar; } interface IBar { } class Bar: IBar { } 但是如果我想让我的Foo类能够创建Bar，不知道IBar背后的具体实现是什么？ 我可以在这里想到4个解决方案，但它们都有缺点： 注入物体的类型并使用反射 使用泛型 使用“服务定位器”并调用Resolve（）方
I am a newbie to 3 tier architecture and below is my DAL code public static int Insert(string firstname, string lastname, DateTime dob, string gender,string email, string password) { // bool flag = false; SqlParameter pid; SqlParameter result; SqlConnection con = Generic.DBConnection.OpenConnection(); try { SqlCommand cmd1 = new
我是3层体系结构的新手，下面是我的DAL代码 public static int Insert(string firstname, string lastname, DateTime dob, string gender,string email, string password) { // bool flag = false; SqlParameter pid; SqlParameter result; SqlConnection con = Generic.DBConnection.OpenConnection(); try { SqlCommand cmd1 = new SqlCommand("Insertreg
It's rare that I hear someone using Inversion of Control (Ioc) principle with .Net. I have some friends that work with Java that use a lot more Ioc with Spring and PicoContainer. I understand the principle of removing dependencies from your code... but I have a doubt that it's so much better. Why do .Net programmers not use (or use less) those types of frameworks? If you do, do you
我很少听到有人在.Net中使用Inversion of Control（Ioc）原理。 我有一些与Java一起工作的朋友，他们在Spring和PicoContainer中使用了更多的Ioc。 我理解从你的代码中去除依赖的原则......但是我怀疑它好多了。 为什么.Net程序员不使用（或少用）这些类型的框架？ 如果你这样做，你是否真的从长远的角度看到了积极的影响？ 许多人在.NET中使用IOC，并且有几个框架可用于协助使用IoC。 你可能在WinForms方面看不到它，因
When I try to compile the following: public static delegate void MoveDelegate (Actor sender, MoveDirection args); I receive, as an error: "The modifer 'static' is not valid for the this item." I'm implementing this within a singleton, with a separate class which calls the delegate. The problem is that when I use the singleton instance within the other class to call the
当我尝试编译以下内容时： public static delegate void MoveDelegate (Actor sender, MoveDirection args); 我收到，作为错误：“修饰'静态'是无效的这个项目。” 我在一个单例中实现了这个功能，并有一个独立的类调用委托。 问题是，当我使用另一个类中的单例实例来调用委托（来自标识符，而不是类型）时，我无论如何都不能这样做，即使我声明委托非静态。 显然，只有当委托是静态的，我才能直接通过类型来引用它
Possible Duplicate: Which C#/.NET Dependency Injection frameworks are worth looking into? Yes I know this question has been asked many times, but the various frameworks keep evolving, so I would like a fresh answer on the subject. A few thoughts about the framework, they are not necessary black or white, but rather my preferences. Things I like: Convention based registrations Construc
可能重复： 哪些C＃/ .NET依赖注入框架值得研究？ 是的，我知道这个问题已被多次提出，但各种框架不断发展，所以我想就这个问题提供一个全新的答案。 关于框架的一些想法，他们不是必要的黑色或白色，而是我的偏好。 我喜欢的东西： 基于公约的注册 建设者注入 也可以定位Silverlight 占地面积小 一个组件 快速 事情我不喜欢： XML 自定义属性 服务定位器模式 我不认为的事情： LINQ 开源
Possible Duplicate: Which .NET Dependency Injection frameworks are worth looking into? Hi, As a new kid in the C#/.NET block just moved in from Java neighbourhood, I am looking for options in Dependency Injection/IoC frameworks for .NET/C#. From Scott Hanselman's blog post few years ago I got a fairly long list of DI frameworks, but there was really not enough information to go with b
可能重复： 哪些.NET依赖注入框架值得研究？ 嗨， 作为C＃/ .NET模块中的一个新成员，我刚刚从Java附近迁入，我正在寻找.NET / C＃的依赖注入/ IoC框架中的选项。 从几年前的Scott Hanselman的博客文章中，我得到了一个相当长的DI框架列表，但实际上没有足够的信息去追踪列表本身（加上许可证和版本号）以做出任何半智能选择。 我也没有开发出任何这些相对受欢迎程度（从而社区支持可用）的最佳值。 这份名单本身可以