Struct VecGroupedReduction

pub struct VecGroupedReduction<R: Reducer> { /* private fields */ }

Trait Implementations

impl<R> GroupedReduction for VecGroupedReduction<R>

where R: Reducer,

fn new_empty(&self) -> Box<dyn GroupedReduction>

Returns a new empty reduction.

fn reserve(&mut self, additional: usize)

Reserves space in this GroupedReduction for an additional number of groups.

fn resize(&mut self, num_groups: IdxSize)

Resizes this GroupedReduction to the given number of groups.

fn update_group( &mut self, values: &Series, group_idx: IdxSize, ) -> PolarsResult<()>

Updates the specified group with the given values.

unsafe fn update_groups( &mut self, values: &Series, group_idxs: &[IdxSize], ) -> PolarsResult<()>

Updates this GroupedReduction with new values. values[i] should be added to reduction self[group_idxs[i]].

unsafe fn combine( &mut self, other: &dyn GroupedReduction, group_idxs: &[IdxSize], ) -> PolarsResult<()>

Combines this GroupedReduction with another. Group other[i] should be combined into group self[group_idxs[i]].

unsafe fn gather_combine( &mut self, other: &dyn GroupedReduction, subset: &[IdxSize], group_idxs: &[IdxSize], ) -> PolarsResult<()>

Combines this GroupedReduction with another. Group other[subset[i]] should be combined into group self[group_idxs[i]].

unsafe fn partition( self: Box<Self>, partition_sizes: &[IdxSize], partition_idxs: &[IdxSize], ) -> Vec<Box<dyn GroupedReduction>>

Partitions this GroupedReduction into several partitions.

fn finalize(&mut self) -> PolarsResult<Series>

Returns the finalized value per group as a Series.

fn as_any(&self) -> &dyn Any

Returns this GroupedReduction as a dyn Any.