Module polars_core::utils

Re-exports

pub use arrow;

pub use rayon;

Structs

NoNull

Just a wrapper structure. Useful for certain impl specializations This is for instance use to implement impl<T> FromIterator<T::Native> for NoNull<ChunkedArray<T>> as Option<T::Native> was already implemented: impl<T> FromIterator<Option<T::Native>> for ChunkedArray<T>

TrustMyLength

Wrap

Traits

Arg

CustomIterTools

CustomIterToolsSized

FromTrustedLenIterator

IntoVec

Functions

accumulate_dataframes_horizontal

accumulate_dataframes_vertical

This takes ownership of the DataFrame so that drop is called earlier.

accumulate_dataframes_vertical_unchecked

This takes ownership of the DataFrame so that drop is called earlier. Does not check if schema is correct

argsort_no_nulls

combine_validities

concat_df

Concat the DataFrames to a single DataFrame.

concat_df_unchecked

Concat the DataFrames to a single DataFrame.

get_supertype

Given two datatypes, determine the supertype that both types can safely be cast to

get_time_units

parallel_op_series

Simple wrapper to parallelize functions that can be divided over threads aggregated and finally aggregated in the main thread. This can be done for sum, min, max, etc.

slice_slice

split_ca

with_unstable_series

A utility that allocates an UnstableSeries. The applied function can then use that series container to save heap allocations and swap arrow arrays.