Struct DenseUnionArray 

pub struct DenseUnionArray<T: UnionArrayType<VARIANTS>, const VARIANTS: usize, Buffer: BufferType = VecBuffer, OffsetItem: Offset = i32>
where
    for<'a> i8: From<&'a T>,
{
    pub variants: <T as UnionArrayType<VARIANTS>>::Array<Buffer, OffsetItem, DenseLayout>,
    pub types: Int8Array<NonNullable, Buffer>,
    pub offsets: Int32Array<NonNullable, Buffer>,
}

A dense union array.

Fields

variants: <T as UnionArrayType<VARIANTS>>::Array<Buffer, OffsetItem, DenseLayout>

The data for the variants

types: Int8Array<NonNullable, Buffer>

The types field encodes the variants

offsets: Int32Array<NonNullable, Buffer>

The offsets in the variant arrays

Trait Implementations

impl<T: UnionArrayType<VARIANTS>, const VARIANTS: usize, Buffer: BufferType, OffsetItem: Offset> Clone for DenseUnionArray<T, VARIANTS, Buffer, OffsetItem>

where for<'a> i8: From<&'a T>, <T as UnionArrayType<VARIANTS>>::Array<Buffer, OffsetItem, DenseLayout>: Clone, Int8Array<NonNullable, Buffer>: Clone, Int32Array<NonNullable, Buffer>: Clone,

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: UnionArrayType<VARIANTS>, const VARIANTS: usize, Buffer: BufferType, OffsetItem: Offset> Default for DenseUnionArray<T, VARIANTS, Buffer, OffsetItem>

where for<'a> i8: From<&'a T>, <T as UnionArrayType<VARIANTS>>::Array<Buffer, OffsetItem, DenseLayout>: Default, Int8Array<NonNullable, Buffer>: Default, Int32Array<NonNullable, Buffer>: Default,

fn default() -> Self

Returns the “default value” for a type.

impl<T: UnionArrayType<VARIANTS>, const VARIANTS: usize, Buffer: BufferType, OffsetItem: Offset> Extend<T> for DenseUnionArray<T, VARIANTS, Buffer, OffsetItem>

where for<'a> i8: From<&'a T>, <T as UnionArrayType<VARIANTS>>::Array<Buffer, OffsetItem, DenseLayout>: Extend<T> + DenseOffset, Int8Array<NonNullable, Buffer>: Extend<i8>, Int32Array<NonNullable, Buffer>: Extend<i32>,

fn extend<I: IntoIterator<Item = T>>(&mut self, iter: I)

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl<T: UnionArrayType<VARIANTS>, const VARIANTS: usize, Buffer: BufferType, OffsetItem: Offset> FromIterator<T> for DenseUnionArray<T, VARIANTS, Buffer, OffsetItem>

where for<'a> i8: From<&'a T>, <T as UnionArrayType<VARIANTS>>::Array<Buffer, OffsetItem, DenseLayout>: Default + Extend<T>, <Buffer as BufferType>::Buffer<i8>: Default + Extend<i8>, <Buffer as BufferType>::Buffer<i32>: Default + Extend<i32>,

fn from_iter<I: IntoIterator<Item = T>>(iter: I) -> Self

Creates a value from an iterator.

impl<T: UnionArrayType<VARIANTS>, const VARIANTS: usize, Buffer: BufferType, OffsetItem: Offset> Length for DenseUnionArray<T, VARIANTS, Buffer, OffsetItem>

where for<'a> i8: From<&'a T>,

fn len(&self) -> usize

Returns the number of elements in the collection, also referred to as its length.

fn is_empty(&self) -> bool

Returns true if there are no elements in the collection.