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ENH: Add Rolling.nunique() #61087

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merged 3 commits into from
Mar 10, 2025
Merged

ENH: Add Rolling.nunique() #61087

merged 3 commits into from
Mar 10, 2025

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snitish
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@snitish snitish commented Mar 8, 2025 •
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Hash-map (C++ unordered_map via Cython) based implementation of Rolling.nunique() with O(N) average time complexity.

@snitish snitish requested a review from WillAyd as a code owner March 8, 2025 22:15
@mroeschke mroeschke added Enhancement Window rolling, ewma, expanding labels Mar 10, 2025
@mroeschke mroeschke added this to the 3.0 milestone Mar 10, 2025
@mroeschke mroeschke merged commit 781182c into pandas-dev:main Mar 10, 2025
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Thanks @snitish

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@mroeschke mroeschke

@WillAyd WillAyd

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Enhancement Window rolling, ewma, expanding
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ENH: provide nunique method on Rolling object
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@snitish @mroeschke