Trait polars_core::chunked_array::ops::ChunkFilter
source · pub trait ChunkFilter<T: PolarsDataType> {
// Required method
fn filter(&self, filter: &BooleanChunked) -> PolarsResult<ChunkedArray<T>>
where Self: Sized;
}
Expand description
Filter values by a boolean mask.
Required Methods§
sourcefn filter(&self, filter: &BooleanChunked) -> PolarsResult<ChunkedArray<T>>where
Self: Sized,
fn filter(&self, filter: &BooleanChunked) -> PolarsResult<ChunkedArray<T>>where
Self: Sized,
Filter values in the ChunkedArray with a boolean mask.
let array = Int32Chunked::new("array".into(), &[1, 2, 3]);
let mask = BooleanChunked::new("mask".into(), &[true, false, true]);
let filtered = array.filter(&mask).unwrap();
assert_eq!(Vec::from(&filtered), [Some(1), Some(3)])
Implementors§
impl ChunkFilter<BinaryType> for BinaryChunked
impl ChunkFilter<StringType> for StringChunked
impl<T> ChunkFilter<ObjectType<T>> for ObjectChunked<T>where
T: PolarsObject,
Available on crate feature
object
only.