Trait agnes::select::SelectField[−][src]

pub trait SelectField<'a, T, DTypes> where
    DTypes: DTypeList,
    T: 'a + DataType<DTypes>, {
    type Output: DataIndex<DTypes, DType = T>;
    fn select(&'a self, ident: FieldIdent) -> Result<Self::Output>
    where
        DTypes: AssocTypes,
        DTypes::Storage: TypeSelector<DTypes, T>;
}

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

Associated Types

`type Output: DataIndex<DTypes, DType = T>`

The return type for the select method.

Required Methods

`fn select(&'a self, ident: FieldIdent) -> Result<Self::Output> where DTypes: AssocTypes, DTypes::Storage: TypeSelector<DTypes, T>,`

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

Implementors

impl<'a, DTypes, T> SelectField<'a, T, DTypes> for DataStore<DTypes> where T: 'static + DataType<DTypes>, DTypes: 'a + DTypeList, type Output = OwnedOrRef<'a, DTypes, T>;
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impl<'a, DTypes, T> SelectField<'a, T, DTypes> for DataView<DTypes> where
    T: 'static + DataType<DTypes>,
    DTypes: 'a + DTypeList,
    DTypes::Storage: MaxLen<DTypes>,   type Output = Framed<'a, DTypes, T>;

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impl<'a, DTypes, T> SelectField<'a, T, DTypes> for DataFrame<DTypes> where
    DTypes: 'a + DTypeList,
    DTypes::Storage: 'a + MaxLen<DTypes>,
    T: 'static + DataType<DTypes>,   type Output = Framed<'a, DTypes, T>;

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