On Mon, Jul 9, 2018 at 3:38 PM, David Mertz <me...@gnosis.cx> wrote: > In my mind, I *rarely* (which is more than never) have my data in the form > of a sequence of key/value pairs. The version of the API that assumes data > starts that way feels like either a niche case, or demands preprocessing > before it's ready to pass to grouping() or collections.Grouping(). >
sure, but it makes it easy to use a different approach -- i.e. a comprehension with expressions rather than a key (and maybe value) function. AT least two people have expressed a preference for that. That said, an identity key is rarely interesting either. > is it EVER interesting?? wouldn't it be essentially a Counter, without the counting? :-) > So I think have key=None mean "assume we get key/val pairs is harmless to > the more common case where we give an explicit key function. > I'm not sure we'll know what's more common 'till it's loose in the wild -- any problem can be solved either way -- which one will people prefer? Given that there Is a preference for comprehensions over map() -- I think it will see a lot of use. -CHB -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception chris.bar...@noaa.gov
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