monarch_dodra, I'm not trying to order cities, I'm trying to filter out duplicate's in my dna chromosomes and "==" isn't working on structs that encapsulates dynamic arrays.
And I can compare elements without defining opCmp. I've written a function that calculates the distance travelled when going to the cities according to that dna and sort using that. It looks like you didn't really get how or what I'm trying to do (I don't blame you, I'm terrible at explaining things). You should really look at the code, most things are more obvious there. Ellery, When I change it so it uses double
