How do I access store state in React Redux?

I am just making a simple app to learn async with redux. I have gotten everything working, now I just want to display the actual state onto the web-page. Now, how do I actually access the store's stat...

What would the Big O be of a nested for loop with an Any() inside it?

This questions is basically a follow-on from my [answer here](https://stackoverflow.com/a/38332524/542251). I really wanted to say what the Big-O of this algorithm would be, but I wasn't sure my claim...

23 May at 12:33

ASP.NET Core - Create custom model validation

In previous versions of ASP.NET MVC the way to add custom validation to your model was by implementing the `IValidatableObject` and implementing your own `Validate()` method. Here's what I have implem...

How to use Data Annotations to validate a nullable int

In an MVC 5 project, I have a model with a nullable int. For reasons that might not be productive to explain, it needs to be an nullable int and cannot be a string. ``` // Value can be null or an int...

12 Jul at 14:44

Type.IsEnum Property in Portable Class Library

I'm trying to code in a `Portable Class Library` using `ASP.NET Core 1.0`, the following instruction: ``` public static void WriteMessage<T>(T value) { if (typeof(T).IsEnum) { Debug....

12 Jul at 11:52

C# emulate HID clicker bluetooth

I need some guidance on how or whether this is possible to achieve without a "server" application running on the pc. I have gotten as far as establishing a bluetooth connection to the PC, I would like...

7 Jan at 02:16

Why click tree throws 'System.Windows.Documents.Run' is not a Visual or Visual3D' InvalidOperationException?

Sometimes right-clicking treeviewitem results unhandled InvalidOperationException. In code behind I select the right clicked row: ``` static TreeViewItem VisualUpwardSearch(DependencyObject source) ...

12 Jul at 09:39

error TS2339: Property 'x' does not exist on type 'Y'

I don't understand why this code generates a TypeScript error. (It's not the original code and is a bit derived, so please ignore the non-sense in the example): ``` interface Images { [key:string]: ...

9 Feb at 19:59

How to add claims in a mock ClaimsPrincipal

I am trying to unit test my controller code which gets the information from the ClaimsPrincipal.Current. In the controller code I ``` public class HomeController { public ActionResult GetName() ...

12 Jul at 08:41

Error: EACCES: permission denied

I run but it throws error. I know it is permission issue but as far as I know, sudo permission is not required for installing node module locally. If I run it with sudo, it gets installed inside ~/n...

12 Jul at 08:50

Which members of .NET's ConcurrentDictionary are thread-safe?

The MSDN documentation of [System.Collections.Concurrent.ConcurrentDictionary](https://msdn.microsoft.com/en-us/library/dd287191(v=vs.110).aspx) says: > # Thread Safety All public and protected mem...

Why can't I put [assembly:Dependency()] above a class?

I'm trying to implement some platform-specific code in Xamarin, using [this answer](https://stackoverflow.com/questions/28688133/how-to-call-platform-specific-page-from-xamarin-forms), but I ran into ...

23 May at 11:46

How to I set the Connection : Keep-Alive header to Close in the JsonServiceClient?

On occasion (not consistently), I'm receiving a "" exception thrown by an instance of the JsonServiceClient. I want to set the Http Connection Header to Close. When I attempt "" exception.

12 Jul at 01:28

Mock IMemoryCache in unit test

I am using asp net core 1.0 and xunit. I am trying to write a unit test for some code that uses `IMemoryCache`. However whenever I try to set a value in the `IMemoryCache` I get an Null reference err...

Compiler Bug when using ?. resulting in a Bad Image that fails PEVerify

I stumbled across something odd: I got a `BadImageFormatException` without knowing what image (assembly) it could possibly refer to. I reduced the solution so that it consists only of a single projec...

11 Jul at 22:30

Replace parameter type in lambda expression

I am trying to replace the parameter type in a lambda expression from one type to another. I have found other answers on stackoverflow i.e. [this one](https://stackoverflow.com/questions/11159697/rep...

23 May at 12:32

Use a Identity 2.0 Database to Authenticate a ASP.NET Core 1.0 application

I am trying to a create a new ASP.NET Core 1.0 web application and I want it to use the Authentication tables that I already have set up. These tables were originally created by a ASP.NET 4.6 web app...

Cannot reference .NET Core library from UWP

I have a with the following project.json: ``` { "version": "1.0.0-*", "dependencies": { "NETStandard.Library": "1.6.0" }, "frameworks": { "netstandard1.6": { } }, "scripts": { ...

23 May at 12:2

"OverflowError: Python int too large to convert to C long" on windows but not mac

I am running the exact same code on both windows and mac, with python 3.5 64 bit. On windows, it looks like this: ``` >>> import numpy as np >>> preds = np.zeros((1, 3), dtype=int) >>> p = [6802256...

11 Jul at 18:51

Can a string-based Include alternative be created in Entity Framework Core?

On an API I need dynamic include, but EF Core does not support string-based include. Because of this, I created a mapper which maps strings to lambda expressions added to a list as: ``` List<List<Expr...

4 Jun at 15:57

How to handle currentDomain.UnhandledException in MSTest

I tried to implement solution based on answer [How to handle exceptions raised in other threads when unit testing?](https://stackoverflow.com/a/934604/518530), but I still don't understand what to do ...

Akka.NET cluster node graceful shutdown

## Background I have a Akka.NET cluster containing a Lighthouse seed node and two other nodes running actor systems. When I attempt to do a graceful shutdown on one of my cluster nodes I want to se...

27 May at 09:26

What does IAppbuilder.UseWebApi do?

I've recently been working on an MVC site that has an api and in the startup.cs there is a line that says `app.UseWebApi`. I did some searching but I couldn't find a decent answer of what it does. Can...

11 Jul at 14:0

How to get normal/custom error response for an exception from an Action returning Stream in ServiceStack?

I have been venturing in the ServiceStack's [documentation](https://github.com/ServiceStack/ServiceStack/wiki/Error-Handling) regarding an issue with throwing from an Action that returns a . The iss...

12 Jul at 06:45

How to implement nhibernate session per request pattern, using Service stack's funq container as a dependency injector

I am getting the session by injecting session to service method in global.asax as 1 ``` protected void Application_Start() { this.RegisterContainer(); } ``` 2 ``` private void RegisterCont...