Function unary_elementwise

pub fn unary_elementwise<'a, T, V, F>(
    ca: &'a ChunkedArray<T>,
    op: F,
) -> ChunkedArray<V>
where
    T: PolarsDataType,
    V: PolarsDataType,
    F: UnaryFnMut<Option<T::Physical<'a>>>,
    V::Array: ArrayFromIter<<F as UnaryFnMut<Option<T::Physical<'a>>>>::Ret>,