How to inherit from an abstract base class written in C#

I’m trying to inherit from an abstract .NET base class in Python (2.7) using Python.NET (2.1.0). I’m a Python n00b but from what I understood… Here’s what I managed to do in Python only and which wor...

'T' does not contain a definition

Is it possible to do the following (If so I can't seem to get it working.. forgoing constraints for the moment)... If the type (because it's ommitted) is inferred, what's the problem? ``` private vo...

23 Sep at 11:0

Roslyn Analyzer Rule does not fail the build

Following on from [this](https://msdn.microsoft.com/en-us/magazine/dn879356.aspx) tutorial from MS, I have created an analyzer for Roslyn. According to the page, you can mark the rule as `DiagnosticS...

How to handle async Start() errors in TopShelf

I have a TopShelf service that uses async code to connect to web services and other application servers. If it's unable to initialize its connections on startup, the service should log some errors an...

23 May at 10:29

Entity Framework update/insert multiple entities

Just a bit of an outline of what i am trying to accomplish. We keep a local copy of a remote database (3rd party) within our application. To download the information we use an api. We currently downlo...

23 Sep at 09:1

Xcode: Could not locate device support files

As i am trying to run my application from newly updated to my which is running It throws below error, [](https://i.stack.imgur.com/bVMBX.png) And, this is my version, [](https://i.stack.imgur.com/...

8 Dec at 20:12

What happened to the .pull-left and .pull-right classes in Bootstrap 4?

In the newest version the pull-left and pull-right have been replaced by .pull-{xs,sm,md,lg,xl}-{left,right,none} That means that instead of writing a simple `class="pull-right"`, I will have now to ...

6 Dec at 20:38

ResizeEnd event is not triggered when resizing the form by maximize button?

In my application the `ResizeEnd` event is triggered when resizing the form by dragging the corners, but it will not be triggered when I click the maximize button. The `Resize` event does not work in ...

7 May at 02:12

await for a PushModalAsync form to closed in xamarin forms

I have a page and on clicking a plus button on toolbar i am calling a popup page from popup page user can add a new entry or cancel / close window without doing anything Everything is working fine...

23 Sep at 04:59

How to find the size or shape of a DataFrame in PySpark?

I am trying to find out the size/shape of a DataFrame in PySpark. I do not see a single function that can do this. In Python, I can do this: ``` data.shape() ``` Is there a similar function in PySpar...

9 Nov at 02:15

Pass react component as props

Lets say I have: ``` import Statement from './Statement'; import SchoolDetails from './SchoolDetails'; import AuthorizedStaff from './AuthorizedStaff'; const MultiTab = () => ( <Tabs initialIndex={...

23 Dec at 06:12

Is it possible to make desktop GUI application in .NET Core?

I have been developing Windows Forms programs for few years. I am now looking into .NET Core (including ASP.NET Core MVC). I am searching for the new GUI desktop technology. In Visual Studio 2015 upda...

24 Nov at 00:42

How To Properly Handle Passwords In C#

It's a well known fact that C# `string` is pretty insecure, it's not pinned in RAM, the Garbage Collector can move it, copy it, leave multiple traces of it in RAM and the RAM can be swapped and be ava...

22 Sep at 21:7

How to prevent Browser cache on Angular 2 site?

We're currently working on a new project with regular updates that's being used daily by one of our clients. This project is being developed using angular 2 and we're facing cache issues, that is our ...

PANIC: Broken AVD system path. Check your ANDROID_SDK_ROOT value

After typing `cordova run android` in terminal, I'm getting this error: ``` Waiting for emulator to start... PANIC: Broken AVD system path. Check your ANDROID_SDK_ROOT value [/Users/username/Library/...

17 Nov at 18:21

How to take the nth digit of a number in python

I want to take the nth digit from an N digit number in python. For example: ``` number = 9876543210 i = 4 number[i] # should return 6 ``` How can I do something like that in python? Should I chang...

23 Sep at 01:0

Can I generate script of a migration with EF code first and .net core

I'm building a MVC application with .Net Core and I need to generate the script of a migration. With EF6 I did run the command ``` update-database -script ``` but when I try to do the same with .net ...

Convert Graphql to SQL?

We have existing SQL Server database and we are using C#. Lets say our mobile client send a graphql to server. How can I convert this SQL, so that my client get the data what he expect?

22 Sep at 15:47

Postgres: check if array field contains value?

I'm sure this is a duplicate question in the sense that the answer is out there somewhere, but I haven't been able to find the answer after Googling for 10 minutes, so I'd appeal to the editors not to...

22 Sep at 15:45

Using Pipes within ngModel on INPUT Elements in Angular

I've an HTML INPUT field. ``` <input [(ngModel)]="item.value" name="inputField" type="text" /> ``` and I want to format its value and use an existing pipe: ``` .... [(ngModel)]="i...

RabbitMQ + C# + SSL

I'm trying to use C# to get RabbitMQ 3.6.2 to use SSL/TLS on Windows 7 against Erlang 18.0. I'm running into errors when I'm enabling SSL in my C# code. I have gone through the steps to set up SSL/T...

21 Mar at 18:47

Unable to create a constant value of type 'System.Char'

I'm getting the following error trying to group and sum some values via LINQ in EF6: > Unable to create a constant value of type 'System.Char'. Only primitive types or enumeration types are supported...

22 Sep at 15:11

Create UserControl in non-UI thread Silverlight 5 browser application

I have a Silverlight 5 browser application. There is a class ``` public class ActivityControl:UserControl { public void LoadSubControls() { //Creates Other UserControls, does calculatio...

How to mock function returning void task

I have a function ``` public Task DoSomethingAsync(); ``` which I want to mock for testing purposes. What is the right way to implement the return value of such a method. If it would return `Task...

22 Sep at 12:45

How to overlay items in StackPanel or ListView?

I am making a card game and I want to display cards in player's hand half-covered be each other. How can I do that using ListView or StackPanel? Here is an example how I would like to display player h...

22 Sep at 17:48