Struct polars::export::arrow::array::MutableListArray

pub struct MutableListArray<O, M> where
    O: Offset,
    M: MutableArray,  { /* private fields */ }

The mutable version of ListArray.

Implementations

impl<O, M> MutableListArray<O, M> where
    O: Offset,
    M: MutableArray + Default, 

pub fn new() -> MutableListArray<O, M>

Creates a new empty MutableListArray.

pub fn with_capacity(capacity: usize) -> MutableListArray<O, M>

Creates a new MutableListArray with a capacity.

impl<O, M> MutableListArray<O, M> where
    O: Offset,
    M: MutableArray, 

pub fn new_from(
    values: M,
    data_type: DataType,
    capacity: usize
) -> MutableListArray<O, M>

Creates a new MutableListArray from a MutableArray and capacity.

pub fn new_with_field(
    values: M,
    name: &str,
    nullable: bool
) -> MutableListArray<O, M>

Creates a new MutableListArray from a MutableArray.

pub fn new_with_capacity(values: M, capacity: usize) -> MutableListArray<O, M>

Creates a new MutableListArray from a MutableArray and capacity.

pub fn try_push_valid(&mut self) -> Result<(), ArrowError>

Needs to be called when a valid value was extended to this array. This is a relatively low level function, prefer try_push when you can.

pub fn mut_values(&mut self) -> &mut M

The values

pub fn offsets(&self) -> &Vec<O, Global>

The offseta

pub fn values(&self) -> &M

The values

pub fn into_arc(self) -> Arc<dyn Array + 'static>

Converts itself into an Array.

pub fn into_box(self) -> Box<dyn Array + 'static, Global>

converts itself into Box<dyn Array>

pub fn shrink_to_fit(&mut self)

Shrinks the capacity of the MutableListArray to fit its current length.

Trait Implementations

impl<O, M> Debug for MutableListArray<O, M> where
    O: Debug + Offset,
    M: Debug + MutableArray, 

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<O, M> Default for MutableListArray<O, M> where
    O: Offset,
    M: MutableArray + Default, 

fn default() -> MutableListArray<O, M>

Returns the “default value” for a type.

impl<O, M> From<MutableListArray<O, M>> for ListArray<O> where
    O: Offset,
    M: MutableArray, 

fn from(other: MutableListArray<O, M>) -> ListArray<O>

Performs the conversion.

impl<O, M> MutableArray for MutableListArray<O, M> where
    O: Offset,
    M: 'static + MutableArray + Default, 

fn len(&self) -> usize

The length of the array.

fn validity(&self) -> Option<&MutableBitmap>

The optional validity of the array.

fn as_box(&mut self) -> Box<dyn Array + 'static, Global>

Convert itself to an (immutable) [‘Array’].

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

Convert itself to an (immutable) atomically reference counted Array.

fn data_type(&self) -> &DataType

The DataType of the array.

fn as_any(&self) -> &(dyn Any + 'static)

Convert to Any, to enable dynamic casting.

fn as_mut_any(&mut self) -> &mut (dyn Any + 'static)

Convert to mutable Any, to enable dynamic casting.

fn push_null(&mut self)

Adds a new null element to the array.

fn shrink_to_fit(&mut self)

Shrink the array to fit its length.

fn is_empty(&self) -> bool

Whether the array is empty.

fn is_valid(&self, index: usize) -> bool

Whether index is valid / set.

impl<O, M, I, T> TryExtend<Option<I>> for MutableListArray<O, M> where
    O: Offset,
    M: MutableArray + TryExtend<Option<T>>,
    I: IntoIterator<Item = Option<T>>, 

fn try_extend<II>(&mut self, iter: II) -> Result<(), ArrowError> where
    II: IntoIterator<Item = Option<I>>, 

Fallible version of Extend::extend.

impl<O, M, I, T> TryPush<Option<I>> for MutableListArray<O, M> where
    O: Offset,
    M: MutableArray + TryExtend<Option<T>>,
    I: IntoIterator<Item = Option<T>>, 

fn try_push(&mut self, item: Option<I>) -> Result<(), ArrowError>

Tries to push a new element.