On Jul 6, 2018, at 2:10 AM, Steven D'Aprano <steve@pearwood.info> wrote:

I would consider statistics
to have similarities - median, mean etc are aggregate functions.

Not really, more like reduce, actually -/ you get a single result.

are also doing something similar to grouping.
.(Yes, a few statistics apply to
nominal and ordinal data too,

And for that, a generic grouping function could be used.

In fact, allowing Counter to be used as the accumulater was one suggestion in this thread, and would build s histogram.

Now that I think about it, you could write a key function that built a histogram for continuous data as well.

Though that might be a bit klunky.

But if someone thinks that’s a good idea, a PR for an example would be accepted:



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