source: branches/1894_RoutePlanning/HeuristicLab.Problems.RoutePlanning/3.3/RoutingGraph/Edge.cs

using HeuristicLab.Problems.RoutePlanning.Interfaces;
namespace HeuristicLab.Problems.RoutePlanning.RoutingGraph {
  public class Edge<Vertex> : IEdge<Vertex> {
    private readonly Vertex source;
    public Vertex Source {
      get { return this.source; }
    }

    private readonly Vertex target;
    public Vertex Target {
      get { return this.target; }
    }

    //private short category;
    //public short Category {
    //  get { return category; }
    //  set { category = value; }
    //}

    private float weight;
    public float Weight {
      get { return weight; }
      set { weight = value; }
    }

    public Edge(Vertex source, Vertex target)
      : this(source, target, 0) {

    }

    public Edge(Vertex source, Vertex target, float weight) {
      this.source = source;
      this.target = target;
      this.weight = weight;
    }

    public override string ToString() {
      return string.Format("{0}->{1}", this.Source, this.Target);
    }

    public override bool Equals(object obj) {
      if (obj is Edge<Vertex>) {
        Edge<Vertex> e = (obj as Edge<Vertex>);
        return (this.source.Equals(e.source)) && (this.target.Equals(e.target));
      }
      return false;
    }

    public override int GetHashCode() {
      return source.GetHashCode() ^ target.GetHashCode();
    }
  }
}