I am triaging elements in a list according to their values by some function f and compute the number of elements for each possible value as follows. countmap(map(f, list)) This returns a dict whose keys are unique values of f and values are the number of occurrence of elements in the list with t…

Lazy countmap

Tamas_Papp February 27, 2020, 10:09am 2

AFAICT accumulators in DataStructures support generic iterables. Combine with IterTools.imap.

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