Add unique_counts()?

This is a follow-up of #275. I've found numpy.unique(x, return_counts=True) quite useful. It allows us to build a histogram for the input array x. I'd suggest us to add the following function:

def unique_counts(x, /):
   """
   return a tuple of two arrays (unique values and counts)
   """

Can we target this for v2021?

We'd be cutting this quite close. :)

Quite close that is for getting support from other array libraries that this is something we want to add for the 2021 revision.

I see. I know NumPy/CuPy have no problem in supporting this, but I am not sure about others.

I'll work on this as per the discussion in today's call.

@leofang

Thanks @leofang!

Seems very reasonable, and if we add it we should indeed add it to the v2021 milestone. Better to do all four new unique_* functions in one go.

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Add `unique_counts()`? #291

Add unique_counts()? #291

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leofang commented on Oct 24, 2021

kgryte commented on Oct 24, 2021

leofang commented on Oct 24, 2021

leofang commented on Nov 4, 2021

kgryte commented on Nov 4, 2021

rgommers commented on Nov 4, 2021

Add `unique_counts()`? #291