Struct polars::chunked_array::object::Utf8Type

pub struct Utf8Type {}

This is supported on crate feature object only.

Trait Implementations

impl ChunkExpandAtIndex<Utf8Type> for ChunkedArray<Utf8Type>

fn expand_at_index(&self, index: usize, length: usize) -> ChunkedArray<Utf8Type>

Create a new ChunkedArray filled with values at that index.

impl ChunkFilter<Utf8Type> for ChunkedArray<Utf8Type>

fn filter(
    &self,
    filter: &ChunkedArray<BooleanType>
) -> Result<ChunkedArray<Utf8Type>, PolarsError>

Filter values in the ChunkedArray with a boolean mask.

impl ChunkReverse<Utf8Type> for ChunkedArray<Utf8Type>

fn reverse(&self) -> ChunkedArray<Utf8Type>

Return a reversed version of this array.

impl ChunkShift<Utf8Type> for ChunkedArray<Utf8Type>

fn shift(&self, periods: i64) -> ChunkedArray<Utf8Type>

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

fn shift_and_fill(
    &self,
    periods: i64,
    fill_value: Option<&str>
) -> ChunkedArray<Utf8Type>

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 ChunkedArray<Utf8Type>

fn argsort_multiple(
    &self,
    other: &[Series],
    reverse: &[bool]
) -> Result<ChunkedArray<UInt32Type>, PolarsError>

Panics

This function is very opinionated. On the implementation of ChunkedArray<T> for numeric types, we assume that all numeric Series are of the same type.

In this case we assume that all numeric Series are f64 types. The caller needs to uphold this contract. If not, it will panic.

fn sort_with(&self, options: SortOptions) -> ChunkedArray<Utf8Type>

fn sort(&self, reverse: bool) -> ChunkedArray<Utf8Type>

Returned a sorted ChunkedArray.

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

Retrieve the indexes needed to sort this array.

impl ChunkTakeEvery<Utf8Type> for ChunkedArray<Utf8Type>

fn take_every(&self, n: usize) -> ChunkedArray<Utf8Type>

Traverse and collect every nth element in a new array.

impl ChunkUnique<Utf8Type> for ChunkedArray<Utf8Type>

fn unique(&self) -> Result<ChunkedArray<Utf8Type>, PolarsError>

Get unique values of a ChunkedArray

fn arg_unique(&self) -> Result<ChunkedArray<UInt32Type>, PolarsError>

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

fn is_unique(&self) -> Result<ChunkedArray<BooleanType>, PolarsError>

Get a mask of all the unique values.

fn is_duplicated(&self) -> Result<ChunkedArray<BooleanType>, PolarsError>

Get a mask of all the duplicated values.

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

Number of unique values in the ChunkedArray

fn mode(&self) -> Result<ChunkedArray<Utf8Type>, PolarsError>

This is supported on crate feature mode only.

The most occurring value(s). Can return multiple Values

impl ChunkZip<Utf8Type> for ChunkedArray<Utf8Type>

fn zip_with(
    &self,
    mask: &ChunkedArray<BooleanType>,
    other: &ChunkedArray<Utf8Type>
) -> Result<ChunkedArray<Utf8Type>, PolarsError>

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

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

fn append_null(&mut self)

fn finish(self) -> ChunkedArray<Utf8Type>

fn shrink_to_fit(&mut self)

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

impl IsFirst<Utf8Type> for ChunkedArray<Utf8Type>

fn is_first(&self) -> Result<ChunkedArray<BooleanType>, PolarsError>

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

fn from_iter_values(
    name: &str,
    it: impl Iterator<Item = S>
) -> ChunkedArray<Utf8Type>

Create a new ChunkedArray from an iterator.

fn from_slice(name: &str, v: &[S]) -> ChunkedArray<Utf8Type>

fn from_slice_options(name: &str, opt_v: &[Option<S>]) -> ChunkedArray<Utf8Type>

fn from_iter_options(
    name: &str,
    it: impl Iterator<Item = Option<S>>
) -> ChunkedArray<Utf8Type>

Create a new ChunkedArray from an iterator.

impl PolarsDataType for Utf8Type

fn get_dtype() -> DataType

impl ToDummies<Utf8Type> for ChunkedArray<Utf8Type>

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

impl PolarsSingleType for Utf8Type