clr

I’m trying to implement an asynchronous function that returns an iterator. The idea is the following: private async Task<IEnumerable<char>> TestAsync(string testString) { foreach (char c in testString.ToCharArray()) { // do other work yield return c; } } However, there is an error message that the function cannot be an iterator block because Task<IEnumerable<char>> is not an iterator interface type. Is there a solution? Joe Amenta It sounds like what you may really be looking for is something like IObservable<T> , which is sort of like a push-based asynchronous IEnumerable<T> . See Reactive

I'm talking about managed .NET code. If we run any program and attach VS to it we can see parameters' values for each method in call stack. I'd like to create a logging solution which will log all parameters' values for each method in call stack. Actually I need this info in case an exception occurs. I know it's possible with profiling API. But I wonder is it possible with only managed code? UPDATE: Ok, probably with pure .NET it's impossible. Then may be with some kind of unmanaged code... the point is to do this from within application itself. An application in case of an exception could

I guess my question is about the CLR Loader. I want to understand the mechanics behind CorFlags.exe /32BIT+ functionality. We know that when one starts an assembly compiled with the Any CPU flag set on 64-bit Windows, it starts as a 64-bit process. If one run CorFlags /32BIT+ on that assembly, it will start as a 32-bit process. I think this is a fascinating feature. I have so many questions about it: How is it implemented? Does the OS Loader get involved? Is possible to build a custom application (I guess an unmanaged one) that loads 32-bit or 64-bit CLR at a wish? Is there an article, book,

My assumption was always that the CLR loaded all of the DLLs it needed on startup of the app domain. However, I've written an example that makes me question this assumption. I start up my application and check to see how many modules are loaded. Process[] ObjModulesList; ProcessModuleCollection ObjModulesOrig; //Get all modules inside the process ObjModulesList = Process.GetProcessesByName("MyProcessName"); // Populate the module collection. ObjModulesOrig = ObjModulesList[0].Modules; Console.WriteLine(ObjModulesOrig.Count.ToString()); I then repeate the exact same code and my count is

Is there a function in win API which can be used to extract the string representation of HRESULT value? The problem is that not all return values are documented in MSDN, for example ExecuteInDefaultAppDomain() function is not documented to return "0x80070002 - The system cannot find the file specified.", however, it does! Therefore, I was wondering whether there is a function to be used in common case. eran You can use _com_error : _com_error err(hr); LPCTSTR errMsg = err.ErrorMessage(); If you don't want to use _com_error for whatever reason, you can still take a look at its source, and see

Suppose there is the following code: private static int DoSwitch(string arg) { switch (arg) { case "a": return 0; case "b": return 1; case "c": return 2; case "d": return 3; } return -1; } private static Dictionary<string, Func<int>> dict = new Dictionary<string, Func<int>> { {"a", () => 0 }, {"b", () => 1 }, {"c", () => 2 }, {"d", () => 3 }, }; private static int DoDictionary(string arg) { return dict[arg](); } By iterating over both methods and comparing, I am getting that the dictionary is slightly faster, even when "a", "b", "c", "d" is expanded to include more keys. Why is this so? Does