cap5lut Posts - Answer Overflow

cap5lut

•Created by cap5lut on 4/15/2024 in #help

vectorizable algorithms/excercises

his is not a question about how it works: I wanna learn more about vectorization and am looking for some algorithms which can be vectorized. I do not want solutions, but a list problems that can be solved and sped up using vectorization to train myself. I have same basic understanding on how it works. eg, i can write a sum algorithm, but thats more or less it because i never really had something where i could apply it and my googling skills regarding this are quite bad. so , im searching from the beginner friendly up to the advanced stuff. do u have some ideas/lists/resources, please tell me 🙂

3 replies

CC#

•Created by cap5lut on 4/1/2023 in #help

✅ VS2022 | Enable missing xml docs warnings for non-public API

Hi, after searching for a while and digging throw Vs2022, this is now my last resort. Basically I want a warning like CS1591, but for the non public stuff. Is there something like that or do I have to write an analyzer for that?

1 replies

CC#

•Created by cap5lut on 3/30/2023 in #help

✅ Make method implemented in interface accessible from implementing type

i have an interface

interface ICL
{
  public IEnumerable<ICLPlatform> GetPlatforms()
  {
    // code
  }
}

interface ICL
{
  public IEnumerable<ICLPlatform> GetPlatforms()
  {
    // code
  }
}

and an implementing struct

struct CLAdapter : ICL
{
}

struct CLAdapter : ICL
{
}

now GetPlatforms() isnt reachable via new CLAdapter().GetPlatforms(), how can i make that accessible? i tried implementing it in the adapter by simply casting this to ICL, but then i run into stack overflows

    /// <inheritdoc/>
    public IEnumerable<ICLPlatform> GetPlatforms()
    {
        return ((ICL)this).GetPlatforms();
    }

    /// <inheritdoc/>
    public IEnumerable<ICLPlatform> GetPlatforms()
    {
        return ((ICL)this).GetPlatforms();
    }

7 replies

CC#

•Created by cap5lut on 3/26/2023 in #help

❔ Unit Test | Mocking class with unsafe methods

Hi, I am having trouble writing unit tests, because I dont know how to mock/setup the underlying instance/its methods. The class Silk.NET.OpenCL.CL (https://github.com/dotnet/Silk.NET/blob/main/src/OpenCL/Silk.NET.OpenCL/CL.gen.cs) does not implement an interface and the methods are unsafe and non virtual. This would be one of the methods I need to mock:

public unsafe int GetPlatformIDs(uint num_entries, nint* platforms, out uint num_platforms);

public unsafe int GetPlatformIDs(uint num_entries, nint* platforms, out uint num_platforms);

(instead of out uint num_platforms I could also use uint* num_platforms, if that matters) I tried using Moq, but I run into errors for the null pointer and count parameter:

        unsafe
        {
            var cl = new Mock<CL>();
            cl.Setup(instance => instance.GetPlatformIDs(0, null, out var count)).Returns(0);
            // ....
        }

        unsafe
        {
            var cl = new Mock<CL>();
            cl.Setup(instance => instance.GetPlatformIDs(0, null, out var count)).Returns(0);
            // ....
        }

CS1944: An expression tree may not contain an unsafe pointer operation CS8198: An expression tree may not contain an out argument variable declaration

( I tried also other libraries like Pose, but they all use System.Linq.Expressions.Expression so I always ran into the same errors) Any idea how to do that?

4 replies

CC#

•Created by cap5lut on 12/1/2022 in #help

❔ AvaloniaUI InvalidCastException

I started playing around with AvaloniaUI and I get a InvalidCastExceptions. the MainWindow's XAML:

<Window xmlns="https://github.com/avaloniaui"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:main="clr-namespace:cap5lut.net.Growbox.Client.Views.Main"
        xmlns:controls="clr-namespace:cap5lut.net.Growbox.Client.Controls"
        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
        x:Class="cap5lut.net.Growbox.Client.Views.Main.MainWindow"
        x:DataType="main:MainWindowViewModel"
        x:CompileBindings="True"
        Title="{Binding Title}">
    <controls:ServerAddForm
        DataContext="{Binding ServerAddForm}"/>
</Window>

<Window xmlns="https://github.com/avaloniaui"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:main="clr-namespace:cap5lut.net.Growbox.Client.Views.Main"
        xmlns:controls="clr-namespace:cap5lut.net.Growbox.Client.Controls"
        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
        x:Class="cap5lut.net.Growbox.Client.Views.Main.MainWindow"
        x:DataType="main:MainWindowViewModel"
        x:CompileBindings="True"
        Title="{Binding Title}">
    <controls:ServerAddForm
        DataContext="{Binding ServerAddForm}"/>
</Window>

the MainWindowViewModel:

public class MainWindowViewModel : Model
{   
    private string _title;
    private ServerAddFormModel _serverAddForm;

    public MainWindowViewModel()
    {
        _title = $"Servers - Growbox - v{Assembly.GetExecutingAssembly().GetName().Version} - cap5lut.net";
        _serverAddForm = new ServerAddFormModel();
    }
    
    public string Title
    {
        get => _title;
        set => SetField(ref _title, value);
    }

    public ServerAddFormModel ServerAddForm
    {
        get => _serverAddForm;
        set => SetField(ref _serverAddForm, value);
    }
}

public class MainWindowViewModel : Model
{   
    private string _title;
    private ServerAddFormModel _serverAddForm;

    public MainWindowViewModel()
    {
        _title = $"Servers - Growbox - v{Assembly.GetExecutingAssembly().GetName().Version} - cap5lut.net";
        _serverAddForm = new ServerAddFormModel();
    }
    
    public string Title
    {
        get => _title;
        set => SetField(ref _title, value);
    }

    public ServerAddFormModel ServerAddForm
    {
        get => _serverAddForm;
        set => SetField(ref _serverAddForm, value);
    }
}

(Model is just an INotifyPropertyChanged implementation)

7 replies

CC#

•Created by cap5lut on 10/25/2022 in #help

UDP Multicast does not work as expected [Answered]

I am starting to play around with UDP for some IPC stuff and wrote a simple UDP Multicast application just to have a playground to advance from, but sadly its not going as expected. First of all: here is the code of the small program https://gist.github.com/cap5lut/ce3bfda6a0997b647a67a20d78d9e189 My expectation was that the writer sends the data and both readers would receive the data, resulting in an output like

writer: sending 5
reader 1: read 5
reader 2: read 5

writer: sending 5
reader 1: read 5
reader 2: read 5

but that is not the case, only the writer and reader 1 is spitting out stuff. what am I doing wrong?

13 replies

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