On Fri., 20 Dec. 2019, 1:56 pm Tim Peters, <tim.pet...@gmail.com> wrote:
> So what problem(s) would a dynamic ordered set really be aiming at? I > don't know. Consistency & predictability I understand and appreciate, > but little beyond that. Even FIFO ordering is somewhat a PITA, since > `next(iter(set))` is an overly elaborate way to need to spell "get the > first" if a FIFO queue _is_ a prime dynamic use case. And there's no > efficient way at all to access the other end (although I suppose > set.pop() would - like dict.popitem() - change to give a _destructive_ > way to get at "the other end"). > I must admit that I was assuming without stating that a full OrderedSet implementation would support the MutableSequence interface. Dictionaries can't do that because they already support the MutableMapping interface. Cheers, Nick.
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