polars::prelude::arity

Function try_unary_elementwise

Source 
pub fn try_unary_elementwise<'a, T, V, F, K, E>(
    ca: &'a ChunkedArray<T>,
    op: F,
) -> Result<ChunkedArray<V>, E>
where
    T: PolarsDataType,
    V: PolarsDataType,
    F: FnMut(Option<<T as PolarsDataType>::Physical<'a>>) -> Result<Option<K>, E>,
    <V as PolarsDataType>::Array: ArrayFromIter<Option<K>>,