如何将泛型类转换为泛型对象类？

Question

假设您有 2 个课程：

public abstract class Foo<T> {
    public abstract T DoSomething();
}

public class FooInt : Foo<int> {
    public override int DoSomething() {
        return 42;
    }
}

我想将 FooInt 转换为 Foo

Answer 1

@Fildor 评论，像这样

public interface IFoo
{
}

public abstract class Foo<T> : IFoo
{
    public abstract T DoSomething();
}

public class FooInt : Foo<int>
{
    public override int DoSomething()
    {
        return 42;
    }
}
public class FooDouble : Foo<double>
{
    public override double DoSomething()
    {
        return 42.0;
    }
}


List<IFoo> list = new List<IFoo>()
   {
       new FooInt(),
       new FooDouble()
   };