dateSplits property

Implementation

Map<int, List<List<int>>> get dateSplits => const <int, List<List<int>>>{
      4: <List<int>>[
        // For length-4 strings, eg 1191 or 9111, two ways to split:
        <int>[1, 2], // 1 1 91 (2nd split starts at index 1, 3rd at index 2)
        <int>[2, 3], // 91 1 1
      ],
      5: <List<int>>[
        <int>[1, 3], // 1 11 91
        <int>[2, 3], // 11 1 91
        // <int>[2, 3], // 91 1 11    <- Duplicate previous one.
        <int>[2, 4], // 91 11 1    <- New and must be added as bug fix.
      ],
      6: <List<int>>[
        <int>[1, 2], // 1 1 1991
        <int>[2, 4], // 11 11 91
        <int>[4, 5], // 1991 1 1
      ],
      7: <List<int>>[
        <int>[1, 3], // 1 11 1991
        <int>[2, 3], // 11 1 1991
        <int>[4, 5], // 1991 1 11
        <int>[4, 6], // 1991 11 1
      ],
      8: <List<int>>[
        <int>[2, 4], // 11 11 1991
        <int>[4, 6], // 1991 11 11
      ],
    };