Struct polars::export::arrow::array::MutableDictionaryArray

pub struct MutableDictionaryArray<K, M> where
    K: DictionaryKey,
    M: MutableArray,  { /* private fields */ }

A mutable, strong-typed version of DictionaryArray.

Implementations

impl<K, M> MutableDictionaryArray<K, M> where
    K: DictionaryKey,
    M: MutableArray + Default, 

pub fn new() -> MutableDictionaryArray<K, M>

Creates an empty MutableDictionaryArray.

impl<K, M> MutableDictionaryArray<K, M> where
    K: DictionaryKey,
    M: MutableArray, 

pub fn try_push_valid<T>(&mut self, value: &T) -> Result<bool, ArrowError> where
    T: Hash, 

Returns whether the value should be pushed to the values or not

pub fn push_null(&mut self)

pushes a null value

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

returns a mutable reference to the inner values.

pub fn values(&self) -> &M

returns a reference to the inner values.

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

converts itself into Arc<dyn 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 MutableDictionaryArray to fit its current length.

Trait Implementations

impl<K, M> Debug for MutableDictionaryArray<K, M> where
    K: Debug + DictionaryKey,
    M: Debug + MutableArray, 

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

Formats the value using the given formatter.

impl<K, M> Default for MutableDictionaryArray<K, M> where
    K: DictionaryKey,
    M: MutableArray + Default, 

fn default() -> MutableDictionaryArray<K, M>

Returns the “default value” for a type.

impl<K, M> From<M> for MutableDictionaryArray<K, M> where
    K: DictionaryKey,
    M: MutableArray, 

fn from(values: M) -> MutableDictionaryArray<K, M>

Performs the conversion.

impl<K, M> From<MutableDictionaryArray<K, M>> for DictionaryArray<K> where
    K: DictionaryKey,
    M: MutableArray, 

fn from(other: MutableDictionaryArray<K, M>) -> DictionaryArray<K>

Performs the conversion.

impl<K, M> MutableArray for MutableDictionaryArray<K, M> where
    K: DictionaryKey,
    M: 'static + MutableArray, 

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<K, M, T> TryExtend<Option<T>> for MutableDictionaryArray<K, M> where
    T: Hash,
    K: DictionaryKey,
    M: MutableArray + TryExtend<Option<T>>, 

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

Fallible version of Extend::extend.