csharp | Client library for emitter.io | Pub Sub library
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kandi X-RAY | csharp Summary
Client library for emitter.io compatible with .Net, .Net MicroFramework and WinRT
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QUESTION
I have found many questions about this but non have helped me. I am trying to write c# code and the omnisharp auto complete doesn't work and I get this back from the Omnisharp Log:
...ANSWER
Answered 2022-Mar-26 at 02:22Suddenly got this problem too, adding "omnisharp.useModernNet": true to the settings.json fixed it for me.
QUESTION
public class MyClass : ISelfReferenceable
{
public Guid Id {get;set;}
public Guid? ParentId {get;set;}
}
public interface ISelfReferenceable
{
TId Id {get;set;}
TId? ParentId {get;set;}
}
...ANSWER
Answered 2022-Mar-18 at 13:00I don't know if it suits your purpose, but it compiles with this:
QUESTION
Recently I upgraded one of my projects to use .NET 6
. Earlier I was using MoreLinq library to use DistinctBy()
to apply it on the specific property.
Now as I upgraded TargetFramework to .NET 6
, this change come up with inbuilt support to DistinctBy()
.
Now the compiler is confused about which DistinctBy()
needs to select, I can't rely on System.Linq
, because the removal of using MoreLinq
will cause multiple other errors.
I know if we face ambiguity between the same methods then we can use using alias
, but I am not sure how to use using alias
for Linq extension methods.
Here is the error:
I am able to replicate the same issue in the below fiddle
...ANSWER
Answered 2021-Nov-10 at 17:46You can't alias an extension method, but you can call the extension like a normal method, using the full namespace. After all, extension methods are really just syntactic sugar. For example (using the same data you provided in your fiddle):
QUESTION
I am trying to create a base record type which will use a different implementation of Equals()
for value equality, in that it will compare collection objects using SequenceEqual()
, rather than comparing them by reference.
However, the implementation of Equals() doesn't work as I'd expect with inheritance.
In the example below, I have got a derived class which has two different lists. Under the default implementation of equality, these records are different because it is comparing the lists by reference equality, not by sequence equality.
If I override the default implementation of Equals()
on the base record to always return true
, the unit test will fail, even though the code is calling RecordBase.Equals(RecordBase obj)
.
ANSWER
Answered 2022-Jan-03 at 13:43Unfortunately, records don't behave the way you expect them to.
When you declare a record, you get the equality check operator and methods for free.
Your base class just returns true
, but when you declare the derived record as a record
, you get an equality check method in there as well, that will look like this:
QUESTION
Background:
I am building an editor extension for Unity (although this question is not strictly unity related). The user can select a binary operation from a dropdown and the operation is performed on the inputs, as seen in the diagram:
The code is taken from a tutorial, and uses an enum here in combination with a switch statement here to achieve the desired behavior.
This next image demonstrates the relationship between the code and the behavior in the graph UI:
Problem
Based on my prior experience programming in other languages, and my desire to allow for user-extensible operations that don't require users to edit a switch statement in the core code, I would LIKE the resulting code to look something like this (invalid) C# code:
...ANSWER
Answered 2021-Dec-30 at 16:43Usually I'd say your question is quite broad and the use case very tricky and requires a lot of not so trivial steps to approach. But I see you also have put quite an effort in research and your question so I'll try to do the same (little Christmas Present) ;)
In general I think generics is not what you want to use here. Generics always require compile time constant parameters.
As I am only on the phone and don't know I can't give you a full solution right now but I hope I can bring you into the right track.
1. Common Interface or base classI think the simplest thing would rather be a common interface such as e.g.
QUESTION
When I use the Omni Sharp to choose a project on VS Code, it occurs an error as follow:
...ANSWER
Answered 2021-Dec-16 at 12:16Have you already found this ticket?
https://github.com/OmniSharp/omnisharp-vscode/issues/4907
This must be caused by a bug related to the OmniSharp extension. For the moment, you can either down grade VS code to 1.62 or try to use pre release version of the extension mentioned in the ticket.
https://github.com/OmniSharp/omnisharp-vscode/releases/tag/v1.23.18-beta2
Please note that you can install the downloaded vsix file inside VS code.
https://code.visualstudio.com/docs/editor/extension-marketplace#_install-from-a-vsix
QUESTION
C# 10 introduced file-scoped namespaces, which I would like to use in Visual Studio's class templates. I've updated the 'Class' template file to the following:
...ANSWER
Answered 2021-Nov-17 at 15:28Check this thread: https://stackoverflow.com/a/69889803
They use a .editorconfig file where you can specify the namespace declaration style. When creating a new file in VS 2022 it will use that new style
QUESTION
When publishing an ASP.NET Core 6 web application with C# 10's enabled to an Azure App Service from a Visual Studio 2022 publishing profile, the publishing build fails due to missing
using
statements.
C# 10 introduces the new implicit usings feature, where certain using
directives are treated as global using
directives based on the SDK. This can be enabled with the following csproj
configuration:
ANSWER
Answered 2021-Nov-10 at 22:58First of all, it appears that this was a false alarm. I apparently neglected to finish rebooting my workstation after installing the release version of Visual Studio 2022. After restarting, I am now able to publish with full support for implicit usings. Whoops.
That said, this does provide a good opportunity to offer some insight into what I discovered after the fact, which may help future readers with similar types of issues—and certainly helped me better understand the integration between the various command-line tools.
Command-Line ArgumentsNotably, there doesn't appear to be any command-line parameters for handling implicit usings built into any of the following tools:
- .NET 6.0 SDK (
dotnet.exe
) - Visual C# compiler (
csc.exe
) - Microsoft Build Engine (
msbuild.exe
)
Instead, this is handled via the Microsoft Build Engine (msbuild.exe
) when working off of a C# project file (*.csproj
), at which point it generates the following intermediate file at:
QUESTION
Consider the following code:
...ANSWER
Answered 2021-Dec-08 at 13:39The C# specification says the following (my bold):
23.4 Fixed and moveable variables
The address-of operator (§23.6.5) and the
fixed
statement (§23.7) divide variables into two categories:
Fixed variables and moveable variables....snip...
The
&
operator (§23.6.5) permits the address of a fixed variable to be obtained without restrictions. However, because a moveable variable is subject to relocation or disposal by the garbage collector, the address of a moveable variable can only be obtained using afixed
statement (§23.7), and that address remains valid only for the duration of thatfixed
statement.In precise terms, a fixed variable is one of the following:
- A variable resulting from a simple-name (§12.7.3) that refers to a local variable, value parameter, or parameter array, unless the variable is captured by an anonymous function (§12.16.6.2).
- .....
So it's explicitly forbidden by the spec. As to why it's forbidden, for that you would have to ask the language designers, but considering how much complexity is involved in capturing variables, it is somewhat logical.
QUESTION
We use App Buddy
as our CI/CD system. Today we migrate project from ASP.NET Core 3.1
to NET 5
. After that dotnet build start consuming a lot of RAM (allocate about 10-12GB) and we dont have as much memory on our server.
On our CI/CD server during dotnet build
we get Microsoft.CSharp.Core.targets(71,5): error : Process terminated. System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
I've tried use -maxCpuCount:1
but it doesn't work. Is it any possibility to limit memory which dotnet build
can use?
ANSWER
Answered 2021-Nov-15 at 18:18After almost one week of searching with team. We find a way to reduce ram consumption during build. We solve it by adding -p:RunAnalyzers=false
and it help a lot! Other solutions didn't work.
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To build for .Net Micro Framework 4.2 or 4.3, you need to download .Net Micro Framework SDK from CodePlex: https://netmf.codeplex.com/
To build for .Net Micro Framework 4.4, you need to download .Net Micro Framework SDK from GitHub: https://github.com/NETMF/netmf-interpreter/releases
.Net MicroFramework 4.2 & 4.3
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