polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Improve performance of `concat_list` implementation
- Sometimes datetime[ns] is not replaced with pl.date in pl.when
- Unexpected behaviour when casting time-zone aware datetime to date
- Casting far future dates to datetime[ns] and back does not return the original value
- `fill_null()` should be stricter on the replacement dtype
- Inconsistent default column name applied depending on float type
- feat: Added output type for `to_dummies()`
- fix(python): Improve schema inference for null-first rows
- Add `pl.case_when()` functionality
- Add offset parameter for rolling expressions
- Docs
- Rust not yet supported