Struct polars::export::arrow::scalar::DictionaryScalar

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pub struct DictionaryScalar<K> where
    K: DictionaryKey,  { /* private fields */ }

Expand description

The DictionaryArray equivalent of Array for Scalar.

Implementations

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impl<K> DictionaryScalar<K> where
K: DictionaryKey,

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pub fn new(
data_type: DataType,
value: Option<Arc<dyn Scalar + 'static>>
) -> DictionaryScalar<K>

returns a new DictionaryScalar

Panics

iff

the data_type is not List or LargeList (depending on this scalar’s offset O)
the child of the data_type is not equal to the values

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pub fn value(&self) -> Option<&Arc<dyn Scalar + 'static>>

The values of the DictionaryScalar

Trait Implementations

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impl<K> Clone for DictionaryScalar<K> where
K: Clone + DictionaryKey,

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fn clone(&self) -> DictionaryScalar<K>

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<K> Debug for DictionaryScalar<K> where
K: Debug + DictionaryKey,

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

Formats the value using the given formatter. Read more

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impl<K> PartialEq<DictionaryScalar<K>> for DictionaryScalar<K> where
K: DictionaryKey,

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fn eq(&self, other: &DictionaryScalar<K>) -> bool

This method tests for self and other values to be equal, and is used by ==. Read more

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fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

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impl<K> Scalar for DictionaryScalar<K> where
K: DictionaryKey,

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

convert itself to

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fn is_valid(&self) -> bool

whether it is valid

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fn data_type(&self) -> &DataType

the logical type.

Auto Trait Implementations

impl<K> !RefUnwindSafe for DictionaryScalar<K>

impl<K> Send for DictionaryScalar<K>

impl<K> Sync for DictionaryScalar<K>

impl<K> Unpin for DictionaryScalar<K> where
K: Unpin,

impl<K> !UnwindSafe for DictionaryScalar<K>

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::export::arrow::scalar::DictionaryScalar

Implementations

impl<K> DictionaryScalar<K> where K: DictionaryKey,

pub fn new( data_type: DataType, value: Option<Arc<dyn Scalar + 'static>>) -> DictionaryScalar<K>

pub fn value(&self) -> Option<&Arc<dyn Scalar + 'static>>

Trait Implementations

impl<K> Clone for DictionaryScalar<K> where K: Clone + DictionaryKey,

fn clone(&self) -> DictionaryScalar<K>

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

impl<K> Debug for DictionaryScalar<K> where K: Debug + DictionaryKey,

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

impl<K> PartialEq<DictionaryScalar<K>> for DictionaryScalar<K> where K: DictionaryKey,

fn eq(&self, other: &DictionaryScalar<K>) -> bool

fn ne(&self, other: &Rhs) -> bool

impl<K> Scalar for DictionaryScalar<K> where K: DictionaryKey,

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

fn is_valid(&self) -> bool

fn data_type(&self) -> &DataType

Auto Trait Implementations

impl<K> !RefUnwindSafe for DictionaryScalar<K>

impl<K> Send for DictionaryScalar<K>

impl<K> Sync for DictionaryScalar<K>

impl<K> Unpin for DictionaryScalar<K> where K: Unpin,

impl<K> !UnwindSafe for DictionaryScalar<K>

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

impl<K> DictionaryScalar<K> where
K: DictionaryKey,

pub fn new(
data_type: DataType,
value: Option<Arc<dyn Scalar + 'static>>
) -> DictionaryScalar<K>

impl<K> Clone for DictionaryScalar<K> where
K: Clone + DictionaryKey,

impl<K> Debug for DictionaryScalar<K> where
K: Debug + DictionaryKey,

impl<K> PartialEq<DictionaryScalar<K>> for DictionaryScalar<K> where
K: DictionaryKey,

impl<K> Scalar for DictionaryScalar<K> where
K: DictionaryKey,

impl<K> Unpin for DictionaryScalar<K> where
K: Unpin,

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>,