public class Point : IEquatable<Point>
{
    public int _xValue {get;set;}
    public double _yValue {get;set;}

    public Point(int x,double y)
    {
        _xValue = x;
        _yValue = y;
    }

    public override bool Equals(object obj)
    {
        return Equals(obj as Point);
    }

    public bool Equals(Point obj)
    {
        return obj != null && obj._xValue == this._xValue && obj._yValue == this._yValue;
    }


}

我必须实现GetHashCode函数,以便我可以将它用作字典键.但是我不清楚在这种情况下GetHashCode函数必须返回什么.有人可以帮我吗？