Struct polars::export::arrow::scalar::PrimitiveScalar

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pub struct PrimitiveScalar<T> where
    T: NativeType,  { /* private fields */ }

Expand description

The implementation of Scalar for primitive, semantically equivalent to Option<T> with DataType.

Implementations

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impl<T> PrimitiveScalar<T> where
T: NativeType,

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pub fn new(data_type: DataType, value: Option<T>) -> PrimitiveScalar<T>

Returns a new PrimitiveScalar.

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pub fn value(&self) -> Option<T>

Returns the optional value.

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pub fn to(self, data_type: DataType) -> PrimitiveScalar<T>

Returns a new PrimitiveScalar with the same value but different DataType

Panic

This function panics if the data_type is not valid for self’s physical type T.

Trait Implementations

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impl<T> Clone for PrimitiveScalar<T> where
T: Clone + NativeType,

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fn clone(&self) -> PrimitiveScalar<T>

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<T> Debug for PrimitiveScalar<T> where
T: Debug + NativeType,

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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<T> From<Option<T>> for PrimitiveScalar<T> where
T: NativeType,

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fn from(v: Option<T>) -> PrimitiveScalar<T>

Performs the conversion.

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impl<T> PartialEq<PrimitiveScalar<T>> for PrimitiveScalar<T> where
T: PartialEq<T> + NativeType,

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fn eq(&self, other: &PrimitiveScalar<T>) -> 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: &PrimitiveScalar<T>) -> bool

This method tests for !=.

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impl<T> Scalar for PrimitiveScalar<T> where
T: NativeType,

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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.

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impl<T> StructuralPartialEq for PrimitiveScalar<T> where
T: NativeType,

Auto Trait Implementations

impl<T> RefUnwindSafe for PrimitiveScalar<T> where
T: RefUnwindSafe,

impl<T> Send for PrimitiveScalar<T>

impl<T> Sync for PrimitiveScalar<T>

impl<T> Unpin for PrimitiveScalar<T> where
T: Unpin,

impl<T> UnwindSafe for PrimitiveScalar<T> where
T: UnwindSafe,

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::PrimitiveScalar

Implementations

impl<T> PrimitiveScalar<T> where T: NativeType,

pub fn new(data_type: DataType, value: Option<T>) -> PrimitiveScalar<T>

pub fn value(&self) -> Option<T>

pub fn to(self, data_type: DataType) -> PrimitiveScalar<T>

Trait Implementations

impl<T> Clone for PrimitiveScalar<T> where T: Clone + NativeType,

fn clone(&self) -> PrimitiveScalar<T>

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

impl<T> Debug for PrimitiveScalar<T> where T: Debug + NativeType,

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

impl<T> From<Option<T>> for PrimitiveScalar<T> where T: NativeType,

fn from(v: Option<T>) -> PrimitiveScalar<T>

impl<T> PartialEq<PrimitiveScalar<T>> for PrimitiveScalar<T> where T: PartialEq<T> + NativeType,

fn eq(&self, other: &PrimitiveScalar<T>) -> bool

fn ne(&self, other: &PrimitiveScalar<T>) -> bool

impl<T> Scalar for PrimitiveScalar<T> where T: NativeType,

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

fn is_valid(&self) -> bool

fn data_type(&self) -> &DataType

impl<T> StructuralPartialEq for PrimitiveScalar<T> where T: NativeType,

Auto Trait Implementations

impl<T> RefUnwindSafe for PrimitiveScalar<T> where T: RefUnwindSafe,

impl<T> Send for PrimitiveScalar<T>

impl<T> Sync for PrimitiveScalar<T>

impl<T> Unpin for PrimitiveScalar<T> where T: Unpin,

impl<T> UnwindSafe for PrimitiveScalar<T> where T: UnwindSafe,

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<T> PrimitiveScalar<T> where
T: NativeType,

impl<T> Clone for PrimitiveScalar<T> where
T: Clone + NativeType,

impl<T> Debug for PrimitiveScalar<T> where
T: Debug + NativeType,

impl<T> From<Option<T>> for PrimitiveScalar<T> where
T: NativeType,

impl<T> PartialEq<PrimitiveScalar<T>> for PrimitiveScalar<T> where
T: PartialEq<T> + NativeType,

impl<T> Scalar for PrimitiveScalar<T> where
T: NativeType,

impl<T> StructuralPartialEq for PrimitiveScalar<T> where
T: NativeType,

impl<T> RefUnwindSafe for PrimitiveScalar<T> where
T: RefUnwindSafe,

impl<T> Unpin for PrimitiveScalar<T> where
T: Unpin,

impl<T> UnwindSafe for PrimitiveScalar<T> where
T: UnwindSafe,

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>,