Struct polars::export::arrow::scalar::Utf8Scalar

source · [−]

pub struct Utf8Scalar<O> where
    O: Offset,  { /* private fields */ }

Expand description

The implementation of Scalar for utf8, semantically equivalent to Option<String>.

Implementations

source

impl<O> Utf8Scalar<O> where
O: Offset,

source

pub fn new(value: Option) -> Utf8Scalar<O> where
P: Into<String>,

Returns a new Utf8Scalar

source

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

Returns the value irrespectively of the validity.

Trait Implementations

source

impl<O> Clone for Utf8Scalar<O> where
O: Clone + Offset,

source

fn clone(&self) -> Utf8Scalar<O>

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

source

impl<O> Debug for Utf8Scalar<O> where
O: Debug + Offset,

source

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

Formats the value using the given formatter. Read more

source

impl<O, P> From<Option> for Utf8Scalar<O> where
O: Offset,
P: Into<String>,

source

fn from(v: Option) -> Utf8Scalar<O>

Performs the conversion.

source

impl<O> PartialEq<Utf8Scalar<O>> for Utf8Scalar<O> where
O: PartialEq<O> + Offset,

source

fn eq(&self, other: &Utf8Scalar<O>) -> bool

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

source

fn ne(&self, other: &Utf8Scalar<O>) -> bool

This method tests for !=.

source

impl<O> Scalar for Utf8Scalar<O> where
O: Offset,

source

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

convert itself to

source

fn is_valid(&self) -> bool

whether it is valid

source

fn data_type(&self) -> &DataType

the logical type.

source

impl<O> StructuralPartialEq for Utf8Scalar<O> where
O: Offset,

Auto Trait Implementations

impl<O> RefUnwindSafe for Utf8Scalar<O> where
O: RefUnwindSafe,

impl<O> Send for Utf8Scalar<O>

impl<O> Sync for Utf8Scalar<O>

impl<O> Unpin for Utf8Scalar<O> where
O: Unpin,

impl<O> UnwindSafe for Utf8Scalar<O> where
O: UnwindSafe,

Blanket Implementations

source

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

source

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

source

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

source

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

source

impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

source

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.

source

impl<T> Pointable for T

source

const ALIGN: usize

The alignment of pointer.

type Init = T

The type for initializers.

source

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

Initializes a with the given initializer. Read more

source

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

Dereferences the given pointer. Read more

source

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

Mutably dereferences the given pointer. Read more

source

unsafe fn drop(ptr: usize)

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

source

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

type Owned = T

The resulting type after obtaining ownership.

source

fn to_owned(&self) -> T

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

source

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

source

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.

source

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.

source

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

source

Struct polars::export::arrow::scalar::Utf8Scalar

Implementations

impl<O> Utf8Scalar<O> where O: Offset,

pub fn new<P>(value: Option<P>) -> Utf8Scalar<O> where P: Into<String>,

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

Trait Implementations

impl<O> Clone for Utf8Scalar<O> where O: Clone + Offset,

fn clone(&self) -> Utf8Scalar<O>

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

impl<O> Debug for Utf8Scalar<O> where O: Debug + Offset,

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

impl<O, P> From<Option<P>> for Utf8Scalar<O> where O: Offset, P: Into<String>,

fn from(v: Option<P>) -> Utf8Scalar<O>

impl<O> PartialEq<Utf8Scalar<O>> for Utf8Scalar<O> where O: PartialEq<O> + Offset,

fn eq(&self, other: &Utf8Scalar<O>) -> bool

fn ne(&self, other: &Utf8Scalar<O>) -> bool

impl<O> Scalar for Utf8Scalar<O> where O: Offset,

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

fn is_valid(&self) -> bool

fn data_type(&self) -> &DataType

impl<O> StructuralPartialEq for Utf8Scalar<O> where O: Offset,

Auto Trait Implementations

impl<O> RefUnwindSafe for Utf8Scalar<O> where O: RefUnwindSafe,

impl<O> Send for Utf8Scalar<O>

impl<O> Sync for Utf8Scalar<O>

impl<O> Unpin for Utf8Scalar<O> where O: Unpin,

impl<O> UnwindSafe for Utf8Scalar<O> where O: 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<O> Utf8Scalar<O> where
O: Offset,

pub fn new<P>(value: Option<P>) -> Utf8Scalar<O> where
P: Into<String>,

impl<O> Clone for Utf8Scalar<O> where
O: Clone + Offset,

impl<O> Debug for Utf8Scalar<O> where
O: Debug + Offset,

impl<O, P> From<Option<P>> for Utf8Scalar<O> where
O: Offset,
P: Into<String>,

impl<O> PartialEq<Utf8Scalar<O>> for Utf8Scalar<O> where
O: PartialEq<O> + Offset,

impl<O> Scalar for Utf8Scalar<O> where
O: Offset,

impl<O> StructuralPartialEq for Utf8Scalar<O> where
O: Offset,

impl<O> RefUnwindSafe for Utf8Scalar<O> where
O: RefUnwindSafe,

impl<O> Unpin for Utf8Scalar<O> where
O: Unpin,

impl<O> UnwindSafe for Utf8Scalar<O> where
O: 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>,