Trait polars::prelude::ChunkFilter

pub trait ChunkFilter<T> {
    fn filter(
        &self, 
        filter: &ChunkedArray<BooleanType>
    ) -> Result<ChunkedArray<T>, PolarsError>;
}

Filter values by a boolean mask.

Required methods

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

Filter values in the ChunkedArray with a boolean mask.

let array = Int32Chunked::new_from_slice("array", &[1, 2, 3]);
let mask = BooleanChunked::new_from_slice("mask", &[true, false, true]);

let filtered = array.filter(&mask).unwrap();
assert_eq!(Vec::from(&filtered), [Some(1), Some(3)])

Implementors

impl ChunkFilter<BooleanType> for ChunkedArray<BooleanType>

impl ChunkFilter<CategoricalType> for ChunkedArray<CategoricalType>

impl ChunkFilter<ListType> for ChunkedArray<ListType>

impl ChunkFilter<Utf8Type> for ChunkedArray<Utf8Type>

impl<T> ChunkFilter<ObjectType<T>> for ChunkedArray<ObjectType<T>> where
    T: PolarsObject, 

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