This question already has an answer here: What is the difference between an abstract function and a virtual function? 21 answers Virtual methods have an implementation and provide the derived classes with the option of overriding it. Abstract methods do not provide an implementation and force the derived classes to override the method. So, abstract methods have no actual code in them, and
这个问题在这里已经有了答案： 抽象函数和虚函数之间有什么区别？ 21个答案 虚拟方法有一个实现，并为派生类提供覆盖它的选项。 抽象方法不提供实现并强制派生类重写该方法。 因此，抽象方法没有实际的代码，而子类必须覆盖该方法。 虚拟方法可以具有代码，通常是默认实现的东西，任何子类都可以使用override修饰符覆盖方法，并提供自定义实现。 public abstract class E { public abstract void AbstractMethod(in
This is probably best shown with an example. I have an enum with attributes: public enum MyEnum { [CustomInfo("This is a custom attrib")] None = 0, [CustomInfo("This is another attrib")] ValueA, [CustomInfo("This has an extra flag", AllowSomething = true)] ValueB, } I want to get to those attributes from an instance: public CustomInfoAttribute GetInfo( MyEnum enumIn
这可能是最好的例子。 我有一个枚举属性： public enum MyEnum { [CustomInfo("This is a custom attrib")] None = 0, [CustomInfo("This is another attrib")] ValueA, [CustomInfo("This has an extra flag", AllowSomething = true)] ValueB, } 我想从一个实例中获取这些属性： public CustomInfoAttribute GetInfo( MyEnum enumInput ) { Type typeOfEnum = enumInput.GetType(); //this
I understand two compiler flags: -ftest-coverage -fprofile-arcs needs to be passed for getting code coverage in GCC. My question is, what is the reasoning for having 2 compiler flags for getting coverage. Also, what can we get if we use them independently?. I tried compiling ac program with only -fprofile-arcs flag. I didnt notice any differences. Was able to generate .gcno .gcda and gcov f
我了解两个编译器标志： -ftest-coverage -fprofile-arcs需要传递给GCC中的代码覆盖。 我的问题是，有2个编译器标志获得覆盖的原因是什么？ 另外，如果我们独立使用它们，我们会得到什么？ 我试着用-fprofile-arcs标志编译ac程序。 我没有注意到任何差异。 能够生成.gcno .gcda和gcov文件 如果您查看-fprofile-arcs的文档，您将看到它生成的数据可以用于两种不同的事情，具体取决于其他选项： -ftest-coverage和-fbranch
I want to perform code coverage on a static library. For this I wrote test cases using boost. In my library I have many functions defined in header files. For example in a header file accuracy.h I have the following functions static float absf( float x ) { return (x >= 0.0f) ? x : -x; } static boolean almost_zero( float n, float tol ) { return (boolean)(absf( n ) <= tol); } I
我想在静态库上执行代码覆盖。 为此，我使用boost来编写测试用例。 在我的库中，我有许多在头文件中定义的函数。 例如在头文件accuracy.h中，我有以下功能 static float absf( float x ) { return (x >= 0.0f) ? x : -x; } static boolean almost_zero( float n, float tol ) { return (boolean)(absf( n ) <= tol); } 我已经编写了这些函数的测试用例。 但问题是GCOV显示这些功能没有涵盖。 如果我将函
I'm want to get all executed code lines of project using gcov. For example code like: int main() { int i=0; for(i=0;i<3;i++)printf("Hello"); return 0; } And result will be like: 1)int i=0; 2)for(i=0;i<3;i++) 3)printf("Hello"); 4)for(i=0;i<3;i++) 5)printf("Hello"); 6)for(i=0;i<3;i++) 7)printf("Hello"); 8)for(i=0;i<3;i++) 9)return 0; The main idea is to make own imp
我想要使用gcov获取所有已执行的项目代码行。 例如代码如下所示： int main() { int i=0; for(i=0;i<3;i++)printf("Hello"); return 0; } 结果将如下所示： 1)int i=0; 2)for(i=0;i<3;i++) 3)printf("Hello"); 4)for(i=0;i<3;i++) 5)printf("Hello"); 6)for(i=0;i<3;i++) 7)printf("Hello"); 8)for(i=0;i<3;i++) 9)return 0; 主要想法是通过重写libgcov来自己实现gcov函数。 之后，将它与gcc -f
I need to execute a PowerShell script from within C#. The script needs commandline arguments. This is what I have done so far: RunspaceConfiguration runspaceConfiguration = RunspaceConfiguration.Create(); Runspace runspace = RunspaceFactory.CreateRunspace(runspaceConfiguration); runspace.Open(); RunspaceInvoke scriptInvoker = new RunspaceInvoke(runspace); Pipeline pipeline = runspace.Creat
我需要在C＃中执行PowerShell脚本。 该脚本需要命令行参数。 这是我迄今为止所做的： RunspaceConfiguration runspaceConfiguration = RunspaceConfiguration.Create(); Runspace runspace = RunspaceFactory.CreateRunspace(runspaceConfiguration); runspace.Open(); RunspaceInvoke scriptInvoker = new RunspaceInvoke(runspace); Pipeline pipeline = runspace.CreatePipeline(); pipeline.Commands.Add(scriptFile);
I'm building a winForms app in NET3.5SP1 using VS2008Express. Am trying to deserialize an object using the System.Web.Script.Serialization library. The error is: Type 'jsonWinForm.Category' is not supported for deserialization of an array. Cheers! using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Li
我正在使用VS2008Express在NET3.5SP1中构建一个winForms应用程序。 我试图使用System.Web.Script.Serialization库反序列化一个对象。 错误是：类型'jsonWinForm.Category'不支持数组的反序列化。 干杯! using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.
I am following this article on RazorGenerator and it say's that I must add references to: System.Web.Helpers.dll System.Web.WebPages.dll System.Web.Razor.dll The only one I can see when I do Add Reference is System.Web.Razor , but I don't know where the other ones are. 您将在Visual Studio 2010,2012和2013中的Assemblies下的Extensions组中找到这些程序集（参考管理器） I had the same
我正在关注RazorGenerator上的这篇文章，并且表示我必须添加对以下内容的引用： System.Web.Helpers.dll System.Web.WebPages.dll System.Web.Razor.dll 我做Add Reference时唯一可以看到的是System.Web.Razor ，但我不知道其他位置在哪里。 您将在Visual Studio 2010,2012和2013中的Assemblies下的Extensions组中找到这些程序集（参考管理器） 我遇到了同样的问题，首先我无法在.NET components列表中找到这些dlls 。
What's the difference between JsonConvert.DeserializeObject and JObject.Parse? As far as I can tell, both take a string and are in the Json.NET library. What kind of situation would make one more convenient than the other, or is it mainly just preference? For reference, here's an example of me using both to do exactly the same thing - parse a Json string and return a list of one of th
JsonConvert.DeserializeObject和JObject.Parse有什么区别？ 据我所知，两个字符串都在Json.NET库中。 什么样的情况会使一个人比另一个人更方便，还是主要只是偏好？ 作为参考，这里有一个例子，我使用两者来完成同样的事情 - 解析一个Json字符串并返回一个Json属性列表。 public ActionResult ReadJson() { string countiesJson = "{'Everything':[{'county_name':null,'description':null,'feat_class':'Civil','featu
I wrote this simple code to Serialize classes as flatten, but when I use [JsonConverter(typeof(FJson))] annotation, it throws a StackOverflowException. If I call the SerializeObject manually, it works fine. How can I use JsonConvert in Annotation mode: class Program { static void Main(string[] args) { A a = new A(); a.id = 1; a.b.name =
我写了这个简单的代码来将类序列化为扁平化，但是当我使用[JsonConverter(typeof(FJson))]注释时，它会引发StackOverflowException。 如果我手动调用SerializeObject ，它工作正常。 我如何在Annotation模式下使用JsonConvert： class Program { static void Main(string[] args) { A a = new A(); a.id = 1; a.b.name = "value"; string json = null;