On Monday, 30 July 2012 at 20:01:59 UTC, maarten van damme wrote:
Great, with that workaround everything works correctly now.

I can finally start playing around with my salesman's dna :p

There is one little problem left, the comparing problem. I can't
really define an opcmp because a city isn't smaller or bigger than another city, it's simply another city. I tried defining opEquals but
it still refuses to work (could be a problem on my end though).

Why do you want to sort the cities?

you need to define an opCmp to do that (not opEquals).

While you *can* deterministically sort the cities using an arbitrary norm (eg Manhattan distance), the end result will be mostly an artificial ordering.
http://en.wikipedia.org/wiki/Manhattan_distance

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