How to use a object whose copy constructor and copy assignment is private?

Question

In reading TCPL, I got a problem, as the title refered, and then \'private\' class is:

class Unique_handle {
private:
    Unique_handle& operato         


        

Answer 1

You can use a shared_ptr to share the object:

class Y
{
public:
  Y(): mHandle(new UniqueHandle()) {}

private:
  boost::shared_ptr mHandle;
};

It's as simple as that.

If you don't want shared ownership, you can use boost::scoped_ptr or the newly created std::unique_ptr if you have access to it, and then implement the CopyConstructor and AssignmentOperator yourself, taking care of their semantics.