Struct polars::datatypes::Utf8Type

pub struct Utf8Type {}

Trait Implementations

impl ChunkExpandAtIndex<Utf8Type> for Utf8Chunked

pub fn expand_at_index(&self, index: usize, length: usize) -> Utf8Chunked

Create a new ChunkedArray filled with values at that index.

impl ChunkFilter<Utf8Type> for Utf8Chunked

pub fn filter(&self, filter: &BooleanChunked) -> Result<ChunkedArray<Utf8Type>>

Filter values in the ChunkedArray with a boolean mask.

impl ChunkReverse<Utf8Type> for Utf8Chunked

pub fn reverse(&self) -> Self

Return a reversed version of this array.

impl ChunkShift<Utf8Type> for Utf8Chunked

pub fn shift(&self, periods: i32) -> Result<Self>

impl ChunkShiftFill<Utf8Type, Option<&'_ str>> for Utf8Chunked

pub fn shift_and_fill(
    &self,
    periods: i32,
    fill_value: Option<&str>
) -> Result<Utf8Chunked>

Shift the values by a given period and fill the parts that will be empty due to this operation with fill_value.

impl ChunkSort<Utf8Type> for Utf8Chunked

pub fn sort(&self, reverse: bool) -> Utf8Chunked

Returned a sorted ChunkedArray.

pub fn sort_in_place(&mut self, reverse: bool)

Sort this array in place.

pub fn argsort(&self, reverse: bool) -> Vec<usize>

Retrieve the indexes needed to sort this array.

impl ChunkUnique<Utf8Type> for Utf8Chunked

pub fn unique(&self) -> Result<Self>

Get unique values of a ChunkedArray

pub fn arg_unique(&self) -> Result<Vec<usize>>

Get first index of the unique values in a ChunkedArray. This Vec is sorted.

pub fn is_unique(&self) -> Result<BooleanChunked>

Get a mask of all the unique values.

pub fn is_duplicated(&self) -> Result<BooleanChunked>

Get a mask of all the duplicated values.

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

Count the unique values.

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

Number of unique values in the ChunkedArray

impl ChunkZip<Utf8Type> for Utf8Chunked

pub fn zip_with(
    &self,
    mask: &BooleanChunked,
    other: &Utf8Chunked
) -> Result<Utf8Chunked>

Create a new ChunkedArray with values from self where the mask evaluates true and values from other where the mask evaluates false

pub fn zip_with_series(
    &self,
    mask: &BooleanChunked,
    other: &Series
) -> Result<ChunkedArray<Utf8Type>>

Create a new ChunkedArray with values from self where the mask evaluates true and values from other where the mask evaluates false

impl ChunkedBuilder<Cow<'_, str>, Utf8Type> for Utf8ChunkedBuilderCow

pub fn append_value(&mut self, val: Cow<'_, str>)

pub fn append_null(&mut self)

pub fn finish(self) -> ChunkedArray<Utf8Type>

pub fn append_option(&mut self, opt_val: Option<N>)

impl<S> NewChunkedArray<Utf8Type, S> for Utf8Chunked where
    S: AsRef<str>, 

pub fn new_from_slice(name: &str, v: &[S]) -> Self

pub fn new_from_opt_slice(name: &str, opt_v: &[Option<S>]) -> Self

pub fn new_from_opt_iter(
    name: &str,
    it: impl Iterator<Item = Option<S>>
) -> Self

Create a new ChunkedArray from an iterator.

pub fn new_from_iter(name: &str, it: impl Iterator<Item = S>) -> Self

Create a new ChunkedArray from an iterator.

impl PolarsDataType for Utf8Type

pub fn get_data_type() -> ArrowDataType

impl PolarsSingleType for Utf8Type

impl ToDummies<Utf8Type> for Utf8Chunked

pub fn to_dummies(&self) -> Result<DataFrame>