Trait polars::chunked_array::object::ChunkRollApply

pub trait ChunkRollApply {
    fn rolling_apply(
        &self, 
        _f: &dyn Fn(&Series), 
        _options: RollingOptions
    ) -> Result<Series, PolarsError> { ... }
}

This is supported on crate feature object only.

This differs from ChunkWindowCustom and ChunkWindow by not using a fold aggregator, but reusing a Series wrapper and calling Series aggregators. This likely is a bit slower than ChunkWindow

Provided methods

fn rolling_apply(
    &self,
    _f: &dyn Fn(&Series),
    _options: RollingOptions
) -> Result<Series, PolarsError>

Implementors

impl<T> ChunkRollApply for ChunkedArray<T> where
    T: PolarsNumericType,
    ChunkedArray<T>: IntoSeries,