Struct polars::chunked_array::object::datatypes::CategoricalChunked

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pub struct CategoricalChunked { /* private fields */ }

This is supported on crate feature object only.

Implementations

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impl CategoricalChunked

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pub fn sort_with(&self, options: SortOptions) -> CategoricalChunked

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pub fn sort(&self, reverse: bool) -> CategoricalChunked

Returned a sorted ChunkedArray.

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pub fn argsort(&self, options: SortOptions) -> ChunkedArray<UInt32Type>

Retrieve the indexes needed to sort this array.

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pub fn get_rev_map(&self) -> &Arc<RevMapping>

Get a reference to the mapping of categorical types to the string values.

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pub fn iter_str(&self) -> CatIter<'_>ⓘNotable traits for CatIter<'a>`impl<'a> Iterator for CatIter<'a> type Item = Option<&'a str>;`

Create an [Iterator] that iterates over the &str values of the [CategoricalChunked].

Trait Implementations

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impl Clone for CategoricalChunked

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fn clone(&self) -> CategoricalChunked

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

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impl<'_> From<&'_ CategoricalChunked> for DictionaryArray<u32>

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fn from(ca: &CategoricalChunked) -> DictionaryArray<u32>

Performs the conversion.

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impl<'_> From<&'_ CategoricalChunked> for DictionaryArray<i64>

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fn from(ca: &CategoricalChunked) -> DictionaryArray<i64>

Performs the conversion.

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impl IntoSeries for CategoricalChunked

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fn into_series(self) -> Series

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fn is_series() -> bool

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impl LogicalType for CategoricalChunked

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fn dtype(&self) -> &DataType

Get data type of ChunkedArray.

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fn get_any_value(&self, i: usize) -> AnyValue<'_>

Gets AnyValue from LogicalType

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fn cast(&self, dtype: &DataType) -> Result<Series, PolarsError>

Auto Trait Implementations

impl !RefUnwindSafe for CategoricalChunked

impl Send for CategoricalChunked

impl Sync for CategoricalChunked

impl Unpin for CategoricalChunked

impl !UnwindSafe for CategoricalChunked

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.

type Init = T

The type for initializers.

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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

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impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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fn clone_into(&self, target: &mut T)

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

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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impl<V, T> VZip<V> for T where
V: MultiLane<T>,

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Struct polars::chunked_array::object::datatypes::CategoricalChunked

Implementations

impl CategoricalChunked

pub fn sort_with(&self, options: SortOptions) -> CategoricalChunked

pub fn sort(&self, reverse: bool) -> CategoricalChunked

pub fn argsort(&self, options: SortOptions) -> ChunkedArray<UInt32Type>

impl CategoricalChunked

pub fn append(&mut self, other: &CategoricalChunked) -> Result<(), PolarsError>

impl CategoricalChunked

pub fn full_null(name: &str, length: usize) -> CategoricalChunked

impl CategoricalChunked

pub fn unique(&self) -> Result<CategoricalChunked, PolarsError>

pub fn n_unique(&self) -> Result<usize, PolarsError>

pub fn value_counts(&self) -> Result<DataFrame, PolarsError>

impl CategoricalChunked

pub fn is_empty(&self) -> bool

pub fn len(&self) -> usize

pub fn set_lexical_sorted(&mut self, toggle: bool)

pub fn get_rev_map(&self) -> &Arc<RevMapping>

pub fn iter_str(&self) -> CatIter<'_>ⓘNotable traits for CatIter<'a>impl<'a> Iterator for CatIter<'a> type Item = Option<&'a str>;

Trait Implementations

impl Clone for CategoricalChunked

fn clone(&self) -> CategoricalChunked

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

impl<'_> From<&'_ CategoricalChunked> for DictionaryArray<u32>

fn from(ca: &CategoricalChunked) -> DictionaryArray<u32>

impl<'_> From<&'_ CategoricalChunked> for DictionaryArray<i64>

fn from(ca: &CategoricalChunked) -> DictionaryArray<i64>

impl IntoSeries for CategoricalChunked

fn into_series(self) -> Series

fn is_series() -> bool

impl LogicalType for CategoricalChunked

fn dtype(&self) -> &DataType

fn get_any_value(&self, i: usize) -> AnyValue<'_>

fn cast(&self, dtype: &DataType) -> Result<Series, PolarsError>

Auto Trait Implementations

impl !RefUnwindSafe for CategoricalChunked

impl Send for CategoricalChunked

impl Sync for CategoricalChunked

impl Unpin for CategoricalChunked

impl !UnwindSafe for CategoricalChunked

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<T> Pointable for T

const ALIGN: usize

type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

unsafe fn drop(ptr: usize)

impl<T> ToOwned for T where T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<V, T> VZip<V> for T where V: MultiLane<T>,

fn vzip(self) -> V

pub fn iter_str(&self) -> CatIter<'_>ⓘNotable traits for CatIter<'a>`impl<'a> Iterator for CatIter<'a> type Item = Option<&'a str>;`

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T> ToOwned for T where
T: Clone,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

impl<V, T> VZip<V> for T where
V: MultiLane<T>,