polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Add a check to Series `__getitem__`, if it's a struct and key is string return self.struct.field(key)
- fix: Tokio runtime cannot start within a runtime
- Allow negative intervals in `date_range` and `datetime_range`
- Optimizer: Struct field projection pushdown
- Add `DataFrame.hash()`
- pl.Expr().meta Improvements
- Better erros for pl.concat
- DataFrame.join: allow dictionary input for parameter `on`
- Iceberg: Outer NULLs are written as empty lists on columns with multiple nesting levels
- Output type mismatch in `when-then`
- Docs
- Rust not yet supported