c# - 如何指定和使用真实的接口(interface)？

Question

是否可以指定必须用接口(interface)实现方法的真实接口(interface)？` 或者这如何工作我想要的:

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

你想要一个通用接口(interface):

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)
    {

    }
}