Struct arrow2::array::growable::GrowableUtf8

pub struct GrowableUtf8<'a, O: Offset> { /* private fields */ }

Concrete Growable for the Utf8Array.

Implementations

impl<'a, O: Offset> GrowableUtf8<'a, O>

pub fn new( arrays: Vec<&'a Utf8Array<O>>, use_validity: bool, capacity: usize ) -> Self

Creates a new GrowableUtf8 bound to arrays with a pre-allocated capacity.

Panics

If arrays is empty.

Trait Implementations

impl<'a, O: Offset> From<GrowableUtf8<'a, O>> for Utf8Array<O>

fn from(val: GrowableUtf8<'a, O>) -> Self

Converts to this type from the input type.

impl<'a, O: Offset> Growable<'a> for GrowableUtf8<'a, O>

fn extend(&mut self, index: usize, start: usize, len: usize)

Extends this Growable with elements from the bounded Array at index index from a slice starting at start and length len.

fn extend_validity(&mut self, additional: usize)

Extends this Growable with null elements, disregarding the bound arrays

fn len(&self) -> usize

The current length of the Growable.

fn as_arc(&mut self) -> Arc<dyn Array>

Converts this Growable to an Arc<dyn Array>, thereby finishing the mutation. Self will be empty after such operation.

fn as_box(&mut self) -> Box<dyn Array>

Converts this Growable to an Box<dyn Array>, thereby finishing the mutation. Self will be empty after such operation