Operator overloading?

Question

I've made myself a rss reader that keeps me up to date and informs me on new shows, or atleast thats the thought behind.

I've made a struct "SeasonEpisode" that hold two ints (season+episode) and a override ToString function.

I store the latest watched locally and i then read whats the newest is from the rss. But how could I compare SeasonEpisodes? right now I take each of the ints and compare them

if( se1.Season >= se2.Season )
    if( se1.Episode > se2.Episode || se1.Season > se2.Season )
        // new episode!

What i really want is

if( se1 > se2 )
    // new episode

Could i get any help please?

Answer 1

There are two ways:

1. Implement IComparable<T> and use CompareTo
2. Overload the greater and less than operators

I suggest, you use both ways:

public class SeasonEpisode : IComparable<SeasonEpisode>
{
    public int CompareTo(SeasonEpisode other)
    {
        if(other == null)
            return 1;
        if(Season == other.Season)
        {
            if(Episode == other.Episode)
                return 0;
            else if(Episode < other.Episode)
                return -1;
            else
                return 1;
        }
        else if(Season < other.Season) 
            return -1;
        else
            return 1;
    }

    public static bool operator <(SeasonEpisode e1, SeasonEpisode e2) 
    {
        return e1.CompareTo(e2) < 0;
    }

    public static bool operator >(SeasonEpisode e1, SeasonEpisode e2) 
    {
        return e1.CompareTo(e2) > 0;
    }
}