Struct polars::export::arrow::array::growable::GrowableUtf8

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

Concrete Growable for the Utf8Array.

Implementations

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

pub fn new(
    arrays: Vec<&'a Utf8Array<O>, Global>,
    use_validity: bool,
    capacity: usize
) -> GrowableUtf8<'a, O>

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

Panics

If arrays is empty.

Trait Implementations

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

fn from(val: GrowableUtf8<'a, O>) -> Utf8Array<O>

Performs the conversion.

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

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 as_arc(&mut self) -> Arc<dyn Array + 'static>

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 + 'static, Global>

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