This post is mostly for Andrei, but I don't think private emails are good for this. I suggest to move the set-related functions of std.algorithm to a different module, because:
1) They are tied to a specific representation of sets (sorted unique InputRanges), so if I have a BitSet, HashSet, ApproximateBloomSet, etc, they don't work (they can work with a SearchTreeSet). 2) I think there are too many names/functions in std.algorithm, and their purpose is a bit too much mixed (and currently algorithm.d module is 173 kB). I don't know what can be a good name for such new module, sorted_input_range_set is (I think) descriptive, but a bit too much long :-) Bye, bearophile
