polars_arrow::legacy::kernels::sort_partition

Function partition_to_groups

Source 
pub fn partition_to_groups<T>(
    values: &[T],
    first_group_offset: IdxSize,
    nulls_first: bool,
    offset: IdxSize,
) -> Vec<[IdxSize; 2]>
where
    T: Debug + NativeType,
Expand description

Take a clean-partitioned slice and return the groups slices With clean-partitioned we mean that the slice contains all groups and are not spilled to another partition.

first_group_offset can be used to add insert the null values group.