Trait polars::chunked_array::object::ChunkFilter
source · [−]pub trait ChunkFilter<T>where
T: PolarsDataType,{
fn filter(
&self,
filter: &ChunkedArray<BooleanType>
) -> Result<ChunkedArray<T>, PolarsError>
where
Self: Sized;
}
Expand description
Filter values by a boolean mask.
Required Methods
sourcefn filter(
&self,
filter: &ChunkedArray<BooleanType>
) -> Result<ChunkedArray<T>, PolarsError>where
Self: Sized,
fn filter(
&self,
filter: &ChunkedArray<BooleanType>
) -> Result<ChunkedArray<T>, PolarsError>where
Self: Sized,
Filter values in the ChunkedArray with a boolean mask.
let array = Int32Chunked::new("array", &[1, 2, 3]);
let mask = BooleanChunked::new("mask", &[true, false, true]);
let filtered = array.filter(&mask).unwrap();
assert_eq!(Vec::from(&filtered), [Some(1), Some(3)])