Function polars::prelude::call_categorical_merge_operation

source ยท 
pub fn call_categorical_merge_operation<I>(
    cat_left: &CategoricalChunked,
    cat_right: &CategoricalChunked,
    merge_ops: I
) -> Result<CategoricalChunked, PolarsError>
where
    I: CategoricalMergeOperation,