On Sun, Mar 5, 2017 at 6:45 PM, Steven D'Aprano <st...@pearwood.info> wrote:
> I sometimes need to know if a list is homogenous, but unfortunately > checking large lists for a common type in pure Python is quote slow. > > Here is a radical thought... why don't lists track their common type > themselves? There's only a few methods which can add items: > For what it's worth, I suggested this a LONG time ago -- well before Python ideas existed.... I thought a "homogenous sequence" could be rally useful for all sorts of optimizations. (at the time I was writing C extensions, and often converting a lot of list to numpy arrays -- which ARE homogenous sequences) Anyway -- it was roundly rejected by Guido and others no one had any interest in the idea. But maybe now that there is a compelling use-case for the built in object the time is right?? -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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