Trait agnes::view::Aggregate

pub trait Aggregate<KeyLabels, ValueLabel, AggLabel, DType, AggType> {
    type Output;
    fn aggregate<AggFunc>(&self, init: AggType, f: AggFunc) -> Self::Output
    where
        AggFunc: Fn(&mut AggType, Value<&DType>);
}

Trait providing the aggregate method for aggregating values over a specified grouping of records. See the intrinsic method aggregate for more details.

Associated Types

type Output

Type produced by this aggregate method.

Loading content...

Required methods

fn aggregate<AggFunc>(&self, init: AggType, f: AggFunc) -> Self::Output where
    AggFunc: Fn(&mut AggType, Value<&DType>), 

Perform the 'aggregate' operation. See the intrinsic method aggregate for more details.

Loading content...

Implementors

impl<Labels, Frames, KeyLabels, ValueLabel, AggLabel, DType, AggType> Aggregate<KeyLabels, ValueLabel, AggLabel, DType, AggType> for DataView<Labels, Frames> where
    Self: NRows + SelectFieldByLabel<ValueLabel, DType = DType>,
    Labels: FieldList<KeyLabels, Frames> + LabelSubset<KeyLabels> + FrameIndexList,
    <Labels as FieldList<KeyLabels, Frames>>::Output: HashIndex + PartialEqIndex,
    <Labels as LabelSubset<KeyLabels>>::Output: Reorder<KeyLabels>,
    AggType: Clone,
    FieldData<AggType>: IntoStore<AggLabel>,
    <FieldData<AggType> as IntoStore<AggLabel>>::Output: IntoFrame,
    Frames: NRows + SubsetClone<<Labels as FrameIndexList>::LabelList>,
    <Frames as SubsetClone<<Labels as FrameIndexList>::LabelList>>::Output: UpdatePermutation,
    DataView<<<Labels as LabelSubset<KeyLabels>>::Output as Reorder<KeyLabels>>::Output, <Frames as SubsetClone<<Labels as FrameIndexList>::LabelList>>::Output>: AddFrame<<<FieldData<AggType> as IntoStore<AggLabel>>::Output as IntoFrame>::Output>, 

type Output = <DataView<<<Labels as LabelSubset<KeyLabels>>::Output as Reorder<KeyLabels>>::Output, <Frames as SubsetClone<<Labels as FrameIndexList>::LabelList>>::Output> as AddFrame<<<FieldData<AggType> as IntoStore<AggLabel>>::Output as IntoFrame>::Output>>::Output

fn aggregate<AggFunc>(&self, init: AggType, f: AggFunc) -> Self::Output where
    AggFunc: Fn(&mut AggType, Value<&DType>), 

Loading content...