https://issues.dlang.org/show_bug.cgi?id=13936
--- Comment #20 from Andrei Alexandrescu <and...@erdani.com> --- (In reply to Dicebot from comment #18) > Some quick notes from a very quick look: > > > I think we shouldn't care about non-equivalence relations > > This is something I simply can't accept. groupBy is not a specialized linear > algebra thing - it is a quite common utility that will be widely used and > widely misused. groupByAdjacent should take care of that. --