代码语言：txt复制
class Block
{
friend:
public:
protected:
private
};
using BlockPtr = std::shared_ptr<Block>;
using Blocks = std::vector<Block>;
using BlocksList = std::list<Block>;
using BlocksPtr = std::shared_ptr<Blocks>;
using BlocksPtrs = std::shared_ptr<std::vector<BlocksPtr>>;
