AWS V4 Signing of .NET HttpClient

I need to call an AWS Gateway API service that is secured with AWS_IAM. I want to use `HttpClient` as this is the recommended way by Microsoft. I have found some example code using other ways. I've ...

How can I enable all features of C# 7 in Visual Studio 2017 project?

After Visual Studio 2017 was released I wanted to try to create simple console project with new C# 7 features. I expected that I simply download new Visual Studio 2017, then create new console project...

ServiceStack RedisServerEvents creating thousands of keys

I'm using ServiceStack with the RedisServerEvents plugin to notify connected clients of changes in data. I've got two Linux VMs running Apache/mod_mono/ServiceStack, a single Redis instance, and an HA...

RegEx match exactly 4 digits

Ok, i have a regex pattern like this `/^([SW])\w+([0-9]{4})$/` This pattern should match a string like `SW0001` with `SW`-Prefix and 4 digits. I thougth `[0-9]{4}` would do the job, but it also matc...

8 Mar at 15:11

C# 7 .NET / CLR / Visual Studio version requirements

What are the minimum .NET framework and CLR version requirements for running C# 7? Also, do I need VS 2017 to compile C# 7?

1 Mar at 09:59

How to get history on react-router v4?

I having some little issue migrating from React-Router v3 to v4. in v3 I was able to do this anywhere: ``` import { browserHistory } from 'react-router'; browserHistory.push('/some/path'); ``` How ...

31 Oct at 09:46

Why does Entity Framework try to SELECT all columns even though I have specified only two?

I've inherited an ASP MVC project that uses Entity Framework 6.1.3 to interact with a Dynamics CRM 2011 SQL database. I'm using this query to try and get all active accounts that have an account numb...

How to update the constant height constraint of a UIView programmatically?

I have a `UIView` and I set the constraints using Xcode Interface Builder. Now I need to update that `UIView` instance's height constant programmatically. There is a function that goes like `myUIView....

VS 2017 Bug or new features?

After upgrading to VS 2017 I got the following error from this code (which has always been working perfectly) ``` byte[] HexStringToByteArray(string hex) { if (hex.Length % 2 == 1) ...

8 Mar at 12:52

Visual Studio 2017 - Git failed with a fatal error

I am using Visual Studio 2017 Community Edition (CE), and I have signed into my Microsoft account and I am connected to VSTS. I can see all my projects and repositories, but when I attempt to pull/fet...

Creating Diagonal Pattern in WPF

I want to create diagonal hatch pattern in WPF. I am using following XAML code to generate it: ``` <VisualBrush x:Key="HatchBrushnew" TileMode="Tile" Viewport="0,0,30,30" ViewportUnits="Abso...

8 Mar at 10:4

ReactJS, find elements by classname in a React Component

I've a React component. Some elements will be inserted through the children. Some of these elements will have a specific classname. How can I get a list of these DOM nodes in my outermost Component? ...

8 Mar at 08:14

How to pass data to dialog of angular material 2

I am using [dialog box](https://material.angular.io/components/component/dialog) of angular material2. I want to pass data to the opened component. Here is how I am opening dialog box on click of a b...

10 Dec at 12:56

MSBuild support for T4 templates in Visual Studio 2017 RTM

In Visual Studio 2015, I'm using the NuGet package `Unofficial.Microsoft.VisualStudio.TextTemplating.14.0.0` which allows me to transform T4 templates directly from MSBuild, whenever a project is buil...

What is the difference between Publish methods provided in the Visual Studio?

When I click on the Publish method following options show up: [](https://i.stack.imgur.com/93V8R.png) What is the significance of each method?

Tuple syntax in VS 2017

In VS2017 RC, when you tried to use new tuple syntax, you received the following error: > CS8179 Predefined type 'System.ValueTuple`X' is not defined or imported In order to use tuple syntax, y...

7 Mar at 21:28

Typescript + React/Redux: Property "XXX" does not exist on type 'IntrinsicAttributes & IntrinsicClassAttributes

I'm working on a project with Typescript, React and Redux (all running in Electron), and I've run into a problem when I'm including one class based component in another and trying to pass parameters b...

7 Mar at 20:38

Joi validation of array

trying to validate that an array has zero or more strings in one case and that it has zero or more objects in another , struggling with Joi docs :( ``` validate: { headers: Joi.object({ ...

10 Jul at 18:21

frame border width in Xamarin.Forms

I use `Xamarin.Forms`, I have `Image`. I want to Border with `Corner Radius` and `Border Width`. Can I do it ? I try to use `Frame`. It good but it has only `Border Width` = 1 and I can't change this....

7 Mar at 18:28

Enable PHP Apache2

I can find the php5 mod in the mods-available directory, but I'm not sure how to get it into the mods-enabled directory. Also, I just wanted to check that this is the way to enable php on my device.....

7 Mar at 17:39

Psql could not connect to server: No such file or directory, 5432 error?

I'm trying to run `psql` on my Vagrant machine, but I get this error: ``` psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Uni...

4 Jan at 22:32

Error:Failed to open zip file. Gradle's dependency cache may be corrupt

I updated android studio 2.3 and there is a bug, gradle doesn't build and it keeps giving me the same error for all projects. ``` Error:Failed to open zip file. Gradle's dependency cache may be corr...

Error when executing `jupyter notebook` (No such file or directory)

When I execute `jupyter notebook` in my virtual environment in Arch Linux, the following error occurred. `Error executing Jupyter command 'notebook': [Errno 2] No such file or directory` My Python ver...

14 Jul at 02:8

Return Json object from Asp.net webMethod to Ajax call

I have following Ajax call method and The asp.net webmethod. My asp.net function is returning some values I need those back in Ajax call .. I have tried lot of things but not succeded yet. ``` <s...

7 Mar at 12:12

How to mock RestSharp portable library in Unit Test

I would like to mockup the RestClient class for test purposes ``` public class DataServices : IDataServices { private readonly IRestClient _restClient; public DataServices(IRestClient restC...

7 Mar at 12:40