polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- `pl.ewm_cov()`
- Implement MmapBytesReader for stdin
- Allow dictionary in .str.replace() and .str.replace_all()
- Implement streaming for scan_pyarrow_dataset
- add optiont to write csv with escaping characters
- No error thrown when using `clip` on int column with float bounds
- Arithmetic operations involving decimal columns in Polars may panic, even when using release mode
- Polars raising `PanicException` from `pl.read_csv` when trying to parse a string with escaped `"` at the start and `”` at the end
- Query optimization does not quite work as intended - small inefficiency
- Inconsistent / wrong result on big enough data
- Docs
- Rust not yet supported