Method compare_rows

perro_source/core/perro_csv/src/lib.rs:759–773

(&self, a: usize, b: usize, sort: CsvSort)

                            (false, true) => std::cmp::Ordering::Less,
                            (true, false) => std::cmp::Ordering::Greater,
                            (true, true) => a.1.cmp(b.1),
                        }
                    } else {
                        a.1.cmp(b.1)
                    };
                    let ord = match sort.order {
                        CsvOrder::Asc => ord,
                        CsvOrder::Desc => ord.reverse(),
                    };
                    ord.then_with(|| a.0.cmp(&b.0))
                };
                if let Some(limit) = limit {
                    let _ = keyed.select_nth_unstable_by(limit, cmp);
                    keyed.truncate(limit);
                }
                keyed.sort_unstable_by(cmp);
                rows.clear();
                rows.extend(keyed.iter().map(|(row, _, _)| *row));