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I built a native C# DataFrame engine to rival Python Polars (it's actually faster on some things)
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I built a native C# DataFrame engine to rival Python Polars (it's actually faster on some things)

DEV Community·Ian Cowley·19 days ago
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#dotnet#csharp#polars#python#glacier#polaris

From Dev.to - python: I built a native C# DataFrame engine to rival Python Polars (it's actually faster on some things)

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Taming the Chaos: Cleaning 10M+ Apple Health Records into a Production-Ready Parquet Lakehouse
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Taming the Chaos: Cleaning 10M+ Apple Health Records into a Production-Ready Parquet Lakehouse

DEV Community·Beck_Moulton·about 1 month ago
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#ai#tutorial#health#polars#apple#fullscreen

From Dev RSS Feed: Taming the Chaos: Cleaning 10M+ Apple Health Records into a Production-Ready Parquet Lakehouse

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I finally understood why my time-series aggregation was silently wrong — and how Polars' group_by_dynamic fixed it

Reddit r/learnpython·u/CriticalCup6207·about 1 month ago
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# Resampling Minute-by-Minute Data into Hourly Summaries If you've ever needed to convert minute-by-minute data into hourly summaries, that's called resampling — aggregating fine-grained time series data into coarser time buckets. It sounds simple.…

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