Trait SelectFieldByLabel 

pub trait SelectFieldByLabel<Label> {
    type DType;
    type Output: DataIndex<DType = Self::DType>;

    // Required method
    fn select_field(&self) -> Self::Output;
}

Trait implemented by data structures to provide access to data for a single field.

Required Associated Types

type DType

Data type of accessed data.

type Output: DataIndex<DType = Self::DType>

The return type for the select_field method.

Required Methods

fn select_field(&self) -> Self::Output

Returns an object that provides DataIndex access to the data in the field specified by Label.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<FrameFields, FramedStore, Label> SelectFieldByLabel<Label> for DataFrame<FrameFields, FramedStore>

where FrameFields: SelectAndFrame<Label, FramedStore>,

type DType = <FrameFields as SelectAndFrame<Label, FramedStore>>::DType

type Output = Framed<<DataFrame<FrameFields, FramedStore> as SelectFieldByLabel<Label>>::DType, <FrameFields as SelectAndFrame<Label, FramedStore>>::Field>

impl<Label, Fields> SelectFieldByLabel<Label> for DataStore<Fields>

where Fields: AssocStorage, Fields::Storage: LookupElemByLabel<Label>, ElemOf<Fields::Storage, Label>: Typed + Valued<Value = DataRef<TypeOfElemOf<Fields::Storage, Label>>>, TypeOfElemOf<Fields::Storage, Label>: Debug,

type DType = <<<Fields as AssocStorage>::Storage as LookupTypedElemByLabel<Label>>::Elem as Typed>::DType

type Output = DataRef<<DataStore<Fields> as SelectFieldByLabel<Label>>::DType>

impl<Labels, Frames, Label> SelectFieldByLabel<Label> for DataView<Labels, Frames>

where Frames: SelectFieldFromLabels<Labels, Label>,

type DType = <Frames as SelectFieldFromLabels<Labels, Label>>::DType

type Output = <Frames as SelectFieldFromLabels<Labels, Label>>::Output