MechWarrior99 Posts - Answer Overflow

MechWarrior99

•Created by MechWarrior99 on 12/24/2024 in #help

High performances way to access members?

Hello, I'm developing a API for visiting members of a object and reading their values, for using in serialization, data validation, etc. I am trying to make it high performant (as reasonably possible), so I want to avoid boxing from reflection. So I've been using generics with MakeGenericMethod/Type with PropertyInfo and delegates to avoid it mostly. The issue is that it isn't well supported with Native AOT. So an alterative I thought of was to mark every class/record/struct with an attribute, and use source generation to make a 'handler' for it. But that feels like it would really bloat the class count along with compile times. Any recommendations, insights or alternatives?

14 replies

CC#

•Created by MechWarrior99 on 8/14/2024 in #help

Arrange points in circle with a Sweep parameter

8 replies

CC#

•Created by MechWarrior99 on 7/23/2024 in #help

✅ Faster & thread safe random number generator?

Is there a good library for getting pseudo random numbers, faster than System.Random? I've done some looking but had a hard time coming up with much.

52 replies

CC#

•Created by MechWarrior99 on 1/21/2024 in #help

How to safely access parameters from Task (Porting from Unity IJob)

I am making a program for generating a 3D mesh from parameters. The generation is done in some Tasks run with Task.Run. I'm struggling to grasp how to properly and safely access the parameters when generating. I am porting the system over from Unity's IJob system, which I think is sort of 'boxing' my thinking in making it hard to get my head around what I need to do. Do I make a class/struct that has all the parameters in it that I populate beforehand and use those values during generation? Sort of like Unity's Job system. Thanks 🙂

36 replies

CC#

•Created by MechWarrior99 on 10/24/2023 in #help

❔ Cancel task on nested exception

I have a series of nested async methods, when a exception is thrown I want to cancel the task. The main issue is that I need to do a try cache in a for loop in a nested method, so that we can get more detailed telemetry about it. That means that the methods just keep going. I could pass the CTS to the tasks instead, or access it through other means, but that also feels a little messy. Hope this makes sense.

private CancellationTokenSource _tokenSource;
public async Task RunBigTask()
{
    _tokenSource = new CancellationTokenSource();
    // Some logic here...
    await OtherClass.RunSmallerTasks(_tokenSource.Token); 
    // Some other logic here...
}

// In another class...
public async Task RunSmallerTasks(CancellationToken ct)
{
    for(int i = 0; i < k; i++)
    {
      ct.ThrowIfCancellationRequested();
      try
      {
        await RunSmallTask();
      } 
      catch(Exception e)
      {
        // Sending telemetry here about the exception.
      }
    }
}

private CancellationTokenSource _tokenSource;
public async Task RunBigTask()
{
    _tokenSource = new CancellationTokenSource();
    // Some logic here...
    await OtherClass.RunSmallerTasks(_tokenSource.Token); 
    // Some other logic here...
}

// In another class...
public async Task RunSmallerTasks(CancellationToken ct)
{
    for(int i = 0; i < k; i++)
    {
      ct.ThrowIfCancellationRequested();
      try
      {
        await RunSmallTask();
      } 
      catch(Exception e)
      {
        // Sending telemetry here about the exception.
      }
    }
}

3 replies

CC#

•Created by MechWarrior99 on 6/14/2023 in #help

❔ Cross-platform 3D rendering library?

Hello, I am working on an application/tool to generate 3D models. I was wondering if there was a good library for 3D rendering, and showing that in a UI. I know there is Silk.Net. But that seems a bit too low level for me (not a graphics/rendering guy at all). And on the other end, I also know that Avalonia has trouble showing 3D renders. Any suggestions to solve these issues? Would I be best to use a game engine like Godot, even if I would have to roll my own UI binding system, and don't need any of the other features a game engine has? Thanks!

7 replies

CC#

•Created by MechWarrior99 on 8/18/2022 in #help

How does assigning default values when creating an instance work? [Answered]

I'm not sure how to ask this question. I also can't for the life of me remember what this style of instance creating is called, otherwise I would just look it up.

public interface IData
{
  int Value { get; set; }
}
public class Data : IData
{
  public int Value { get; set; }
}

public class Container
{
  public IData DataSlot { get; set; }
}

// In some method...

var container = new Container()
{
  // How does this work? DataSlot is a interface.
  DataSlot = { Value = 5 }
}

public interface IData
{
  int Value { get; set; }
}
public class Data : IData
{
  public int Value { get; set; }
}

public class Container
{
  public IData DataSlot { get; set; }
}

// In some method...

var container = new Container()
{
  // How does this work? DataSlot is a interface.
  DataSlot = { Value = 5 }
}

11 replies

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