Trait polars_core::chunked_array::ops::TakeRandom

pub trait TakeRandom {
    type Item;
    fn get(&self, index: usize) -> Option<Self::Item>;
    unsafe fn get_unchecked(&self, index: usize) -> Self::Item;
}

Random access

Associated Types

type Item

Required methods

fn get(&self, index: usize) -> Option<Self::Item>

Get a nullable value by index.

Safety

Out of bounds access doesn’t Error but will return a Null value

unsafe fn get_unchecked(&self, index: usize) -> Self::Item

Get a value by index and ignore the null bit.

Safety

This doesn’t check if the underlying type is null or not and may return an uninitialized value.

Implementors

impl TakeRandom for BooleanChunked

type Item = bool

fn get(&self, index: usize) -> Option<Self::Item>

unsafe fn get_unchecked(&self, index: usize) -> Self::Item

impl TakeRandom for CategoricalChunked

type Item = u32

fn get(&self, index: usize) -> Option<Self::Item>

unsafe fn get_unchecked(&self, index: usize) -> Self::Item

impl TakeRandom for ListChunked

type Item = Series

fn get(&self, index: usize) -> Option<Self::Item>

unsafe fn get_unchecked(&self, index: usize) -> Self::Item

impl<'a> TakeRandom for &'a Utf8Chunked

type Item = &'a str

fn get(&self, index: usize) -> Option<Self::Item>

unsafe fn get_unchecked(&self, index: usize) -> Self::Item

impl<'a, T> TakeRandom for &'a ChunkedArray<T> where
    T: PolarsNumericType, 

type Item = T::Native

fn get(&self, index: usize) -> Option<Self::Item>

unsafe fn get_unchecked(&self, index: usize) -> Self::Item

impl<'a, T> TakeRandom for NumTakeRandomChunked<'a, T> where
    T: PolarsNumericType, 

type Item = T::Native

fn get(&self, index: usize) -> Option<Self::Item>

unsafe fn get_unchecked(&self, index: usize) -> Self::Item

impl<'a, T> TakeRandom for NumTakeRandomCont<'a, T> where
    T: Copy, 

type Item = T

fn get(&self, index: usize) -> Option<Self::Item>

unsafe fn get_unchecked(&self, index: usize) -> Self::Item

impl<'a, T: PolarsObject> TakeRandom for &'a ObjectChunked<T>

type Item = &'a T

fn get(&self, index: usize) -> Option<Self::Item>

unsafe fn get_unchecked(&self, index: usize) -> Self::Item

impl<T> TakeRandom for ChunkedArray<T> where
    T: PolarsNumericType, 

type Item = T::Native

fn get(&self, index: usize) -> Option<Self::Item>

unsafe fn get_unchecked(&self, index: usize) -> Self::Item