C# - transform an async task from one type to another

I'm used to working with the Scala programming language - using Scala I could map over futures, such as: ``` val response: Future[HttpResponse] = asyncHttpClient.GetRequest("www.google.com") val sta...

29 Jul at 13:58

.NET core replacement for TcpClient

So in the old .NET you were able to initialize a new instance of the TcpClient class and connect to the specified port on the specified host using TcpClient(string, int). That no longer works for TcpC...

1 Aug at 13:31

ServiceStack ServerEventsClient auto-reconnect

I am using the ServerEventsClient for server side events to clients. Currently if I shutdown the server the client doesn't automatically reconnect later when it is available again. How do I make it a...

29 Jul at 11:40

Angular2 set value for formGroup

So I have a complex form for creating an entity and I want to use it for editing as well I am using new angular forms API. I structured the form exactly as the data I retrieve from the database so I w...

29 Jul at 14:3

How to search for an element in a golang slice

I have a slice of structs. ``` type Config struct { Key string Value string } // I form a slice of the above struct var myconfig []Config // unmarshal a response body into the above slice ...

7 Dec at 09:48

'g++' is not recognized as an internal or external command, operable program or batch file

``` #include<iostream> using namespace std; int main() { cout<<"hi"<<endl; return 0; } ``` I am using Sublime text 3, and I am getting this error: > error- 'g++' is not recognized as a...

29 Jul at 07:27

TextFieldParser replacement in .net Core 1

In the past, for c# .net MVC projects, I used TextFieldParser from the Visual Basic Reference. Now with .Net Core 1 that no longer seems to be an option. At least I can't figure out how to add the v...

21 Aug at 04:57

case_when in mutate pipe

It seems `dplyr::case_when` doesn't behave as other commands in a `dplyr::mutate` call. For instance: ``` library(dplyr) case_when(mtcars$carb <= 2 ~ "low", mtcars$carb > 2 ~ "high") %>% ...

29 Jul at 02:40

How can I eager load objects that are referencing the primary key of my POCO class in a 1:Many relationship?

Considering the documentation here, you can define foreign key relationships in your pocos like the given example: ``` public class Customer { [References(typeof(CustomerAddress))] public int...

29 Jul at 01:6

In Visual Studio Code How do I merge between two local branches?

In Visual Studio Code it seems that I am only allowed to push, pull and sync. There is documented support for merge conflicts but I can't figure out how to actually merge between two branches. The Git...

29 Jul at 00:32

How to define references when one poco/table has a composite primary key

Considering the documentation [here](https://github.com/ServiceStack/ServiceStack.OrmLite), you can define foreign key relationships in your pocos like the given example: ``` public class Customer { ...

29 Jul at 00:6

Referencing mscorlib 4.0.0.0 from .NET Core 1.0 class library

I have a .NET Core 1.0 class library which targets .NET 4.6.1 and references the .NET Standard Library 1.6.0 and Identity Framework 2.2.1 ``` { "version": "1.0.0-*", "dependencies": { ...

How to get the parameter from a relative URL string in C#?

What's the most efficient way to get a specific parameter from a relative URL string using C#? For example, how would you get the value of the `ACTION` parameter from the following relative URL strin...

28 Jul at 20:28

Mixing async/await with Result

Let me just preface this question with a few things: 1. I've read several SO questions saying that you should **not** do this (such as [How to safely mix sync and async code][1]) 2. I've read [Async/A...

6 May at 01:1

How to load jinja template directly from filesystem

The [jinja API document at pocoo.org](http://jinja.pocoo.org/docs/dev/api/#) states: > The simplest way to configure Jinja2 to load templates for your application looks roughly like this:``` from jinj...

10 Jan at 01:12

Unable to cast object of type 'Newtonsoft.Json.Linq.JObject' to type <MyClass>

This code: ``` var commandMessage = new CommandMessage { CorrelationId = Guid.NewGuid() }; var json = JsonConvert.SerializeObject(commandMessage); var myCommandMessage = (CommandMessage)JsonConvert.D...

28 Jul at 15:58

IdentityServer3 with ServiceStack and MVC Client

I'm new to IdentityServer3 and am just starting to get it set up. It seems to be going quite well and I've been working on the Hybrid flow for an MVC app similar to that shown in Kevin Dockx's Plurals...

Running async methods in parallel

I've got an async method, `GetExpensiveThing()`, which performs some expensive I/O work. This is how I am using it: ``` // Serial execution public async Task<List<Thing>> GetThings() { var first ...

28 Jul at 10:57

Disable compiler optimisation for a specific function or block of code (C#)

The compiler does a great job of optimising for RELEASE builds, but occasionally it can be useful to ensure that optimisation is turned off for a local function (but not the entire project by untickin...

ASP.NET Core Web API exception handling

I am using ASP.NET Core for my new REST API project after using regular ASP.NET Web API for many years. I don't see any good way to handle exceptions in ASP.NET Core Web API. I tried to implement an e...

9 Mar at 18:28

ASP.NET Core 1.0 on IIS error 502.5 - Error Code 0x80004005

I just updated my server (Windows 2012R2) to .NET Core 1.0 RTM Windows Hosting pack from the previous .NET Core 1.0 RC2. My app works on without any issues but the server keeps showing: ``` HTTP Erro...

Broken tab navigation in popup with WPF user control hosted inside Winforms in default AppDomain

I have a WPF user control that uses a Popup. This control is a plugin and can be loaded in the main AppDomain or in a separate AppDomain, and it is hosted in a Winforms form using ElementHost. When th...

17 Apr at 20:57

VSCode -- how to set working directory for debugging a Python program

How do I run a Python program under debug and set the working directory for the run?

9 Jun at 15:16

How can I prevent event bubbling in nested React components on click?

Here's a basic component. Both the `<ul>` and `<li>` have onClick functions. I want only the onClick on the `<li>` to fire, not the `<ul>`. How can I achieve this? I've played around with e.preventDe...

11 Mar at 17:43

Automapper performance

I'm using Automapper to map my business model to a ViewModel. It works, but it's very slow. I have a collection with 6893 objects with 23 properties (test environment, production should have much mo...

28 Jul at 15:14