Conda activate not working?

``` gonzo  ~/a/packages  conda env list # conda environments: # ppo_latest /nohome/jaan/abhishek/anaconda3/envs/ppo_latest root * /nohome/jaan/abhishek/anaconda3 go...

12 Nov at 07:3

C# 7 Compiler Error - Pattern Matching

For some reason, `M1()` causes a compiler error, while `M2()`, which does the same thing, causes no error. Any idea why? Using `false ==` should be the same as using the not operator, `!`. > Use of ...

11 Nov at 20:54

INSTALL_FAILED_USER_RESTRICTED : android studio using redmi 4 device

[](https://i.stack.imgur.com/TsZ3Z.jpg) Got this freaky error ``` Installation failed with message Failed to finalize session : INSTALL_FAILED_USER_RESTRICTED: Install canceled by user. It is possible...

17 Aug at 14:18

What is the best Environment.SpecialFolder for store application data in Xamarin.Forms?

I'm new in Xamarin.Forms and mobile development. I want to store user and encrypted password of my application user in file on mobile device. I'm using xamarin forms technology. I kwnow that there are...

No provider for HttpClient

After upgrading from angular 4.4 to 5.0 and after updating all HttpModule and Http to HttpClientModule I started to get this error. I also added HttpModule again to be sure it's not due to some depe...

11 Jun at 07:45

PropertyBuilder<T> Does Not Contain A Definition For HasColumnType

I just built up a bunch of POCO classes and a DbContext class utilizing EntityFramework Core and the Scaffold-DbContext NuGet Package Manager Console command. It generated a bunch of code and most of...

Using "await" inside non-async function

I have an async function that runs by a setInterval somewhere in my code. This function updates some cache in regular intervals. I also have a different, synchronous function which needs to retrieve ...

10 Nov at 18:57

Inheritance security rules violated by type: 'MySql.Data.Entity.MySqlEFConfiguration'

I've created an asp.net web application which should connect to a mysql database. I´m using entity framework 6 with an ado.net entity data model. I´ve also followed the following tutorial: [https://d...

npm WARN npm npm does not support Node.js v9.1.0

I updated to the latest node v9.1.0 and now npm doesn't work. > npm WARN npm npm does not support Node.js v9.1.0

10 Nov at 15:31

"Predefined type 'System.*' is not defined or imported" Error, visual studio code, omnisharp

I'm having an issue with the mentioned error in several .net core applications. I'm using vs code version 1.18.0 but the error started to appear already in the previous version. The error appears in ...

How to change port number in vue-cli project

How to change Port number in Vue-cli project so that it run's on another port instead of 8080.

How can I manually return or throw a validation error/exception in Laravel?

Have a method that's importing CSV-data into a Database. I do some basic validation using ``` class CsvImportController extends Controller { public function import(Request $request) { ...

How can I use window size in Vue? (How do I detect the soft keyboard?)

In my mobile web app with Vue, I want to hide my footer when the soft keyboard pops. So I have a little function to test the ratio of window height to window width... ``` showFooter(){ return h /...

30 Jul at 16:11

How do I use Topshelf to host ServiceStack?

I'm trying to selfhost ServiceStack in Topshelf, but keep getting an error: > Only Uri prefixes ending in '/' are allowed. Using the ServiceStack templates for a Windows service works but not the ...

10 Nov at 09:57

Deconstruct a C# Tuple

Is it possible to deconstruct a tuple in C#, similar to F#? For example, in F#, I can do this: ``` // in F# let tupleExample = (1234,"ASDF") let (x,y) = tupleExample // x has type int // y has type st...

25 Jan at 00:2

How to install python in a docker image?

I want to create a docker image with `selenium` and `chrome` correctly installed, so I choose a base image with these properties. Therefore, the first line of the `Dockerfile` is as follows: ``` FROM...

10 Nov at 06:24

How to handle 401 (Authentication Error) in axios and react?

I have one file request.js which contains wrapper for axios ajax request. I am calling request function from multiple react components and when one of the request fails I want to refresh the token and...

Entity Framework upgrade to 6.2.0 from 6.1.x breaks certain queries unless I enable MARS

I recently upgraded EF 6.1.3 to 6.2.0 on one of our large projects, and it has broken a significant amount of our LINQ queries. Enabling MultipleActiveResultSets causes everything to work as normal ag...

9 Nov at 17:54

Using Protobuf Client from Java Example

We're trying to interface with our ServiceStack REST Server from a linux Java integration, using Protobuf to increase the speed of transmission. We have found the JsonServiceClient implementation in ...

9 Nov at 17:10

How can I Deconstruct Value Tuples that are out parameters in C# 7?

Given the following: ``` var dic = new Dictionary<string, (int, int)>() { ["A"] = (1, 2) }; dic.TryGetValue("A", out (int, int) value); ``` I can easily get the `value` out of the dictionary, ...

9 Nov at 17:16

How to unit test HttpContext.SignInAsync()?

[SignInAsync() Source Code](https://github.com/aspnet/HttpAbstractions/blob/3e3772eecd4cc57399c28a3f899e6b0406ef2e1b/src/Microsoft.AspNetCore.Authentication.Abstractions/AuthenticationHttpContextExten...

Google.Protobuf.InvalidProtocolBufferException: Protocol message contained an invalid tag (zero)

I have a problem with my school project, i use Protobuf library but i have the following error: > Google.Protobuf.InvalidProtocolBufferException" Protocol message contained an invalid tag (zero). My...

9 Nov at 04:36

What does `HTTPContext.SignInAsync` do behind the scenes?

I am interested in building my own login system, which keeps me away from the out of the box `Identity`, which hides a lot of details. I was taking a look at Authentication using cookies. [https://d...

HttpContextAccessor.HttpContext is null on Linux while non-null on Windows in ServiceStack.Core

I have a simple ServiceStack project that runs on .NET Core 2.0. This works fine on Windows but fails on Linux. With the very same code (see below). The service gets injected with an `IHttpContextAc...

Modulus gives wrong outcome?

Could anyone tell me why these two modulus calculations yield two different outcomes? I just need to blame someone or something but me for all those hours I lost finding this bug. ``` public void tes...

8 Nov at 21:31