Thanks for the follow up. I don't expect a particular order if I spin through the contents of a set, but it hadn't occurred to me how expensive it might be sim

Thanks for the follow up. I don't expect a particular order if I spin through the contents of a set, but it hadn't occurred to me how expensive it might be simply to get the sequence. This makes a good example of when "polymorphism" or "strategy patterns" are useful to swap in and out how you do some related things to fit what actually ended up happening in an app.