Question

Sorry if the question is silly. I come from java background.

In the following code, base_list is a parent class of SqlAloc, but what’s the meaning of public memory?

class base_list :public memory::SqlAlloc  
{  
protected:  
  list_node *first,**last;  
  uint32_t elements;  
public:
};

Answer 1

Memory is probably a namespace (kind of like an outer class) in which SqlAlloc is defined.

C++ has both public and private inheritance (protected, too, actually.) public inheritance is just like Java inheritance; in private inheritance, though, code outside the derived class doesn’t know about the base class. It’s a way to inherit implementation without inheriting type. In Java, you can only do both.