如何指定和使用真实的界面？

Question

是否有可能指定必须使用接口实现方法的真实接口？`或者这是如何工作的我想要的：

public interface IGraph
{
    void addEdge(IGraphVertex a, IGraphVertex b);
}

public interface IGraphVertex
{

}

// problematic code


public class Graph2d : IGraph
{
    public void addEdge(Graph2dVertex a, Graph2dVertex b)
    {

    }
}

public class Graph2dVertex : IGraphVertex
{

}

我得到的错误是Graph2d没有实现addVertex(IGraphVertex a, IGraphVertex b);

Answer 1

你想要一个通用的接口：

public interface IGraphVertex
{

}

public interface IGraph<T>
    where T: IGraphVertex
{
    void addEdge(T a, T b);
}

然后：

public class Graph2dVertex : IGraphVertex
{

}

public class Graph2d : IGraph<Graph2dVertex>
{
    public void addEdge(Graph2dVertex a, Graph2dVertex b)
    {

    }
}

Answer 2

您需要修复Graph2h类中的方法签名：

public class Graph2d : IGraph
{
   public void addVertex(IGraph2dVertex a, IGraph2dVertex b)
   {

   }
}