template <typename T_CELL_STYLE>
    class CMap
    {
    public:
        CMap(IN UINT row_num, IN UINT col_num,
                  IN T_CELL_STYLE cell_style = static_cast<T_CELL_STYLE>(0));

        // 下標操作符重載
        typename vector<T_CELL_STYLE>::iterator operator[](IN UINT x);

    public:
        const UINT m_ROW_NUM;    // 地圖網格行數
        const UINT m_COL_NUM;    // 地圖網格列數
    private:
        vector<T_CELL_STYLE> _m_map_data;    // 存放地圖數據

    }; /* class CMap */

    // 地圖尺寸
    #define _MAP_ROW   30
    #define _MAP_COL    36
    // 地圖單元格樣式
    typedef enum {
        _CELL_GROUND,
        _CELL_GRASS,
        _CELL_BRICK,
        _CELL_STEEL,
        _CELL_WATER
    } CELLSTYLE;

    CMap<CELLSTYLE> myMap(_MAP_ROW, _MAP_COL, _CELL_GROUND);
    // 獲取地圖第3行第5列單元格樣式
    vector<T_CELL_STYLE>::iterator iter = myMap[3];
    CELLSTYLE aCell = iter[5];

    template <typename T_CELL_STYLE>
    inline typename vector<T_CELL_STYLE>::iterator
    CMap<T_CELL_STYLE>::operator[](IN UINT x)
    {
        if (m_ROW_NUM <= x)
        {
            overflow_error e("overflow - CMap<T_CELL_STYLE>::operator[]");
            throw(e);
        }
        return _m_map_data.begin() + x * m_COL_NUM;
    }