Trait polars::chunked_array::apply::Apply

pub trait Apply<'a, A, B> {
    fn apply<F>(&'a self, f: F) -> Self
    where
        F: Fn(A) -> B;
}

Required methods

fn apply<F>(&'a self, f: F) -> Self where
    F: Fn(A) -> B, 

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Implementors

impl<'a> Apply<'a, &'a str, String> for Utf8Chunked

fn apply<F>(&'a self, f: F) -> Self where
    F: Fn(&'a str) -> String, 

impl<'a> Apply<'a, bool, bool> for BooleanChunked

fn apply<F>(&self, f: F) -> Self where
    F: Fn(bool) -> bool, 

impl<'a, T> Apply<'a, <T as ArrowPrimitiveType>::Native, <T as ArrowPrimitiveType>::Native> for ChunkedArray<T> where
    T: PolarsNumericType, 

fn apply<F>(&'a self, f: F) -> Self where
    F: Fn(T::Native) -> T::Native, 

Chooses the fastest path for closure application. Null values remain null.

Example

use polars::prelude::*;
fn double(ca: &UInt32Chunked) -> UInt32Chunked {
    ca.apply(|v| v * 2)
}

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