Function binary_search_ca 

pub fn binary_search_ca<'a, T>(
    ca: &'a ChunkedArray<T>,
    search_values: impl Iterator<Item = Option<T::Physical<'a>>>,
    side: SearchSortedSide,
    descending: bool,
) -> Vec<IdxSize> 
where
    T: PolarsDataType,
    T::Physical<'a>: TotalOrd + Debug + Copy,