Moniker | NET library and CLI tool

I have a list of objects with a boolean property.

I'd like to count these objects according to this boolean property - None's included.

Are there functions in the standard library that would be more efficient, terser, or more Pythonic than fully writing out a loop to iterate over them?

Counter does not seem appropriate, and this nor this solve the problem - as far as I can tell.

I am getting the following error with the code below:

• I am declaring my repository with AddScoped in my restful api when I use this. Still does not work. (services.AddScoped();)
• I have tried using AsNoTracking(), but SaveChanges does not work. Even when I tell EF that the state has change, I get the same error all over again.

The instance of entity type 'ConferenceRoom' cannot be tracked because another instance with the same key value for {'Id'} is already being tracked. When attaching existing entities, ensure that only one entity instance with a given key value is attached. Consider using 'DbContextOptionsBuilder.EnableSensitiveDataLogging' to see the conflicting key values.

I was trying to port a C# code from .NET 4.8 to .NET 5, older version of .NET was using Microsoft.Windows.SDK.Contracts, In .NET 5 Microsoft.Windows.SDK.Contracts is replaced by Target Framework Monikers (TFMs) I used the same code an tried to cast the compositor to ICompositorDesktopInterop but it throws exception :

System.PlatformNotSupportedException: 'Marshalling as IInspectable is not supported in the .NET runtime.'

Here is the code:

I'm developing an extension for Visual Studio that includes a XAML view inside a VS window. I want the extension to look and feel like the native UI. The extension is currently running and working fine in VS2017 and VS2019 using the following code to transform a moniker to a WPF BitmapSource that can be used directly from XAML:

I use Reinforced.Typings and target my project as net5.0-windows. Build fails with the below error because such a moniker is not targeted: the tools folder contains net5.0 among others, but not net5.0-windows.

Here's the relevant part of my C# library csproj file

Hello Guys I'm Having a Lot of trouble mapping some models using AutoMapper and I wanted to know if you could point me in the right direction.

I have some Entities as follow;

I am creating a website using ASP.Net Core 5 and EF Core 5.

After I deleted all my migrations in migration folder suddenly Visual Studio starts bombing me with errors as it shown below:

On the top I get this message:

In the Error List I get:

And somehow I can not choose a Target Framework any more:

UPDATE:

Here is the content of the .targets file:

I have multiple Excel instances running and want to connect to a particular file that is open in one of them. I tried following the instructions by Tim Golden to get the workbook by its full filename. This is what I did in iPython: