c – 记录界面

另外,请您查看我的界面并告诉我评论是否足够清晰？

/**
    Interface that should be implemented by all resources. Implementing
    this interface is necessary for compatibility with the ResourceManager
    class template.

    note Documentation of this interface includes guidelines on how
    implementations should be written.

    see ResourceManager
                                                                              */
class IResource
{
  public:
    /**
        Loads resource data from a file. If data is already loaded,the function should return immediately.

        throw std::exception Should throw on any failure to load the
        resource. If the resource is already loaded,don't throw,just
        return (as previously indicated).

        note Access to this function should also be provided directly
        from a constructor. That constructor should catch any exceptions
        and throw them further to its caller.
                                                                              */
    virtual void loadFromFile(const std::string& file) = 0 ;
    /**
        All general guidelines from loadFromFile() also apply to this
        function. Additionally,the resource should not take possession of
        the buffer; the buffer should be safe to delete after loading.
                                                                              */
    virtual void loadFromMemory(const char* buffer,std::size_t size) = 0;
    /**
        Frees the data currently held by the resource object. Should
        return immeditelly if no data is loaded.
                                                                              */
    virtual void free() = 0;
    virtual bool isLoaded() const = 0;
};

编辑：打开相关讨论.

主要是在Johann Gerell’s answer的评论部分中的对话,我在programmers.stackexchange上打开了一个相当冗长的线程.你可以在这里查看：
> Single-responsibility and custom data types