TS2531: Object is possibly 'null'

I have the following function:- ``` uploadPhoto() { var nativeElement: HTMLInputElement = this.fileInput.nativeElement; this.photoService.upload(this.vehicleId, nativeElement.files[0]) ...

22 Mar at 14:58

Dotnet build fails when project includes foreign language resources

I am using Visual Studio 15.6.3, dotnet SDK 2.1.102. Recently, (maybe after an update) I tracked down a dotnet build bug that is showing up to a project that includes foreign language resources. The ...

15 May at 09:2

Why does .NET Core 2.0 perform worse than .NET Framework 4.6.1

I've wrote a program that creates 4 threads which each sort 20.000 numbers from low to high 50 times. I've runned this test several times on .NET Core 2.0 and .NET Framework 4.6.1. In this test .NET F...

13 Dec at 12:58

Fastest way to solve chain-calculations

I have a input like ``` string input = "14 + 2 * 32 / 60 + 43 - 7 + 3 - 1 + 0 * 7 + 87 - 32 / 34"; // up to 10MB string size int result = Calc(input); // 11 ``` - - - `14 + 2 * 32``512`- `+-*/`- ...

22 Mar at 13:30

Programmatically create service bus subscription using .net standard

My scenario: Website hosted on the cloud, where each instance creates a subscription to a Service Bus Topic for itself to listen for messages. My question:

21 May at 10:44

Flutter: how to prevent device orientation changes and force portrait?

I would like to prevent my application from changing its orientation and force the layout to stick to "portrait". In the main.dart, I put: ``` void main(){ SystemChrome.setPreferredOrientations([ ...

26 Dec at 09:42

Why am I getting error "The type 'IReturn<>' is defined in an assembly that is not referenced" using ServiceStack in VIsualStudio 2017

I am running Visual Studio 2017 15.6.3. I have a .NET Standard 2.0 DLL project which contains Request and Response classes for use with ServiceStack. The Request classes implement IReturn<>. I have...

22 Mar at 09:6

What could cause an error related to npm not being able to find a file? No contents in my node_modules subfolder. Why is that?

I'm trying to run `npm install` in the angular project folder I got from [ASP.NET Boilerplate](https://aspnetboilerplate.com/Pages/Documents/Zero/Startup-Template-Angular) and I'm getting an error tha...

Process finished with exit code 139 (interrupted by signal 11: SIGSEGV)

I'm trying to execute a [Python script](https://pastebin.com/jSjn1aaD), but I am getting the following error: ``` Process finished with exit code 139 (interrupted by signal 11: SIGSEGV) ``` I'm usi...

Does Task.WhenAll wait for all the tasks in case of exceptions

I have two tasks. I run both of them with Task.WhenAll. What happens if one of them throws an exception? Would the other one complete?

21 Mar at 10:15

Unable to compile simple Java 10 / Java 11 project with Maven

I have a trivial Maven project: ``` src └── main └── java └── module-info.java pom.xml ``` pom.xml: ``` <groupId>org.example</groupId> <artifactId>example</artifactId> <version>1.0-SNA...

JwtAuthProviderReader multiple audiences

In looking at the JwtAuthProviderReader class I notice the audience configured in the Audience property has to exactly match the aud value in the JWT. Is there a specific reason for this? My aud value...

21 Mar at 02:3

Exporting Data from google colab to local machine

How to export data frames which are created in google colab to your local machine? I have cleaned a data set on google colab. Now I want to export the data frame to my local machine. `df.to_csv` is...

10 Apr at 10:15

Conditional Validation in Yup

I have an email field that only gets shown if a checkbox is selected (boolean value is `true`). When the form get submitted, I only what this field to be required if the checkbox is checked (boolean i...

24 Jan at 08:48

Assets file obj\project.assets.json doesn't have a target - VS2017

Using Visual Studio 2017, AspNetCore 1.1.2 All of a sudden I am getting following error when I am trying to publish (Release build) any project in the solution: > Assets file 'C:\example\obj\project...

20 Mar at 19:52

Flutter - Vertical Divider and Horizontal Divider

In Flutter, is there an option to draw a vertical lines between components as in the image. [](https://i.stack.imgur.com/rzquW.png)

28 Dec at 20:58

docker: Error response from daemon: Get https://registry-1.docker.io/v2/: Service Unavailable. IN DOCKER , MAC

I am having this issue ``` system3:postgres saurabh-gupta2$ docker build -t postgres . Sending build context to Docker daemon 38.91kB Step 1/51 : FROM registry.access.redhat.com/rhel7/rhel Get https:...

30 Jan at 04:16

ResizeObserver - loop limit exceeded

About two months ago we started using Rollbar to notify us of various errors in our Web App. Ever since then we have been getting the occasional error: `ResizeObserver loop limit exceeded` The thing...

How to pass a POCO class to .NET Core configuration

I am working on integration tests of .NET Core application and want to use some test configuration. My configuration is a POCO class that is configured via `appsettings.json` and then consumed via `IO...

19 Mar at 02:23

ASP.NET MVC (Async) CurrentCulture is not shared between Controller and View

I have an ASP.NET MVC 4 application that is targeting .NET Framework 4.7.1, with the problem that the culture is not shared between Controller and View, if the action contains async calls. I am refer...

Get browser language in ASP.NET Core?

I am trying to get the default language from the browser and I use the following code to get it: ``` var languages = HttpContext.Request.UserLanguages; ``` Since the above is not supported with .NE...

Visual Studio indentation set to two spaces instead of four space tab

I have just opened an old project here at work. Someone appears to have changed the indentation. It's set to 2 spaces instead of four space tabbing. [](https://i.stack.imgur.com/NYv7w.png) What I ...

28 Feb at 06:9

Domain-based routing in ASP.NET Core 2.0

I have an ASP.NET Core 2.0 app hosted on an Azure App Service. This application is bound to `domainA.com`. I have one route in my app—for example, `domainA.com/route`. Now, I want to introduce anoth...

Exception calling "Remove" with "0" argument(s): "The given key was not present in the dictionary

I have added a migration using `Add-Migration`, Now If I run `Remove-Migration`, it reverts the migration and remove the generated migration file successfully, but gives the error in Package Manager C...

How to determine if service has already been added to IServiceCollection

I am creating helper classes to simplify configuration and injection of interfaces via `IServiceCollection` for a library. The libraries constructor contains a number of dependencies that are likely t...

20 Mar at 06:42