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| template<typename T>
class Grid
{
public:
Grid(size_t width=kDefaultWidth, size_t height=kDefaultHeight): mWidth(width), mHeight(height), mCells(width, std::vector<std::optional<T>>(height)) {};
virtual ~Grid() = default;
std::optional<T>& at(size_t x, size_t y) const;
static const size_t kDefaultWidth = 10;
static const size_t kDefaultHeight = 10;
private:
size_t mWidth, mHeight;
std::vector<std::vector<std::optional<T>>> mCells;
};
template <typename T>
std::optional<T>& Grid<T>::at(size_t x, size_t y) const
{
if (x >= Grid<T>::mWidth || y >= Grid<T>::mHeight)
throw std::out_of_range("");
return mCells[x][y];
}
|
