Passing C# parameters which can "fit" an interface, but do not actually implement it

Suppose I have the following class, which was defined in another assembly so I can't change it. ``` class Person { public string Greet() => "Hello!"; } ``` I now define an interface, and a me...

29 Jan at 18:46

Simple Conditional Routing in Reactjs

How to implement conditional routing i.e. if and only if some conditions satisfies, then routing should occur. For example, if and only if the user enters the correct credentials, login should be succ...

ReactJS: Maximum update depth exceeded error

I am trying to toggle the state of a component in ReactJS but I get an error stating: > Maximum update depth exceeded. This can happen when a component repeatedly calls setState inside componentWillU...

19 Jul at 09:12

WebAPI Core routing issues

So, I am playing around with Web API (ASP.NET Core 2) and having routing issues. I have several controllers such as: SchoolController TeacherController. Both have Gets: `Get(int id)` Problem is th...

How to grep for case insensitive string in a file?

I have a file `file1` which ends with `Success...` OR `success...` I want to `grep` for the word `success` in a way which is not case sensitive way. I have written the following command but it is case...

24 Jan at 15:53

Can Nullable be used as a functor in C#?

Consider the following code in C#. ``` public int Foo(int a) { // ... } // in some other method int? x = 0; x = Foo(x); ``` The last line will return a compilation error `cannot convert from...

Location permission for Android above 6.0 with Xamarin.Forms.Maps

I'm trying to implement a Xamarin.Forms application using Xamarin.Forms.Maps, however I always fall into the exception: Java.Lang.SecurityException: my location requires permission ACCESS_FINE_LOCATI...

How to Set/Update State of StatefulWidget from other StatefulWidget in Flutter?

1. For Example in the below code plus button works and able to update the text but the minus button does not. 2. But if we press FloatingActionButton then the State is refreshed . 3. The minus button...

8 Nov at 22:33

Not able to pip install pickle in python 3.6

I am trying to run the following code: ``` import bs4 as bs import pickle import requests import lxml def save_sp500_tickers(): resp = requests.get("https://en.wikipedia.org/wiki/List_of_S%26P_50...

22 Jan at 05:49

Bootstrap responsive sidebar menu to top navbar

So I've been searching and searching for guidance in this with no avail. Basically, I just want to have a sidebar, but when the screen gets small, aka smartphones screen size, it transforms into a na...

Clone/duplicate an existing GameObject and its children

Is there a C# way in Unity to duplicate an existing GameObject and all of its children? In my case, I have an empty GameObject with a number of Text objects as children and I would like to create a c...

27 Jan at 00:19

serilog format SourceContext for showing only assembly name

I configured my project to use Serilog for logging using dependecy injection. I use the following schema in the classes constructor: ``` namespace FlickPopper.API.Controllers { public class Val...

26 Jan at 21:57

How to view instagram profile picture in full-size?

I was able to view and download a person's full sized, high resolution profile picture on Instagram until even a few days ago. I usually remove the 's150x150' from the URL and it worked fine for me. B...

22 Aug at 18:31

Shortcut to instantiate an object in Visual Studio

I have a class with more than 8 properties, and I often want to instantiate it in some method, but it is super tedious to have to write the properties one by one to assign them the value. Is there a...

26 Jan at 15:39

How to display 3 items per row in flexbox?

I have a list and I want to display my `li` elements horizontally and 3 per row. I've been trying to get what I want, but no luck. Is there a solution? ``` <div class="serv"> <ul> ...

26 Jan at 16:29

How can I run selenium chrome driver in a docker container?

# tl;dr How can I install all the components to run Selenium in a docker container? --- # Question I'm starting with this image: ``` FROM microsoft/aspnetcore-build:2 AS builder WORKDIR ...

How to include only selected properties on related entities

I can include only related entities. ``` using (var context = new BloggingContext()) { // Load all blogs, all related posts var blogs1 = context.Blogs .Include(b => ...

26 Jan at 14:10

How to detect if debugging

I have a .Net Core console application. In the configure method in my startup.cs I am trying to test if the debugger is enabled or not: ``` if (HttpContext.Current.IsDebuggingEnabled) loggerFact...

29 Jan at 07:42

How to set shadow effect on ImageView

I'm tryin' to set shadow on an Image view on Xamarin.Forms (targeting the Android platform) and I got some examples on the internet. The PCL code is quite simple, and the platform seemed pretty easy...

Functions are not valid as a React child. This may happen if you return a Component instead of from render

I have written a Higher Order Component: ``` import React from 'react'; const NewHOC = (PassedComponent) => { return class extends React.Component { render(){ return ( ...

(VS2017) There was an error running the selected code generator: 'Sequence contains no elements'

I'm running through [one of Microsoft's tutorial](https://learn.microsoft.com/en-us/aspnet/core/tutorials/first-mvc-app/)s on MVC development and I'm getting errors when trying to create various eleme...

IWebHost: Calling Run() vs RunAsync()

When a new ASP.NET Core 2.0 project is created, the boilerplate `Main` method in the `Program` class looks something like this: ``` public static void Main(string[] args) { BuildWebHost(args).Run...

Spring 5.0.3 RequestRejectedException: The request was rejected because the URL was not normalized

Not sure if this is a bug with Spring 5.0.3 or a new feature to fix things on my end. After the upgrade, I am getting this error. Interestingly this error is only on my local machine. Same code on te...

15 Apr at 11:42

ASP.NET Core - Swashbuckle not creating swagger.json file

I am having trouble getting the Swashbuckle.AspNetCore (1.0.0) package to generate any output. I read the swagger.json file should be written to '~/swagger/docs/v1'. However, I am not getting any ou...

20 Nov at 09:0

Why does this very simple C# method produce such illogical CIL code?

I've been digging into IL recently, and I noticed some odd behavior of the C# compiler. The following method is a very simple and verifiable application, it will immediately exit with exit code 1: ``...

25 Jan at 14:58