// @nuget: Arch

using System;

using Arch.Core;

​

public class Program

{

    public static void Main()

    {

        using var world = World.Create();

        world.Create(new A());

        world.Create(new B());

        var interfaceQuery = new QueryDescription().WithAny<ITest>();

        var aQuery = new QueryDescription().WithAny<A>();

        world.Query(in interfaceQuery, (in Entity e) =>

        {

            Console.WriteLine("ITest Query");

        });

        world.Query(in aQuery, (in Entity e) =>

        {

            Console.WriteLine("A Query");

        });

    }

}

​

public interface ITest

{

}

​

public struct A : ITest

{

}

​

public struct B : ITest

{

}