Re: [Boost-users] How to make multi_index_container work withstd::unique_ptr?

What I mean is dynamic changing. For example

class B {public: virtual ~B()}  // Base class. class D1 : public B {}            // D1 derived from B class D2 : public B {}            // D1 derived from B

scoped_ptr<B> p = new D1;   // pointing to D1 p.reset(new D2);    // change pointing to D2

If they are shared between owners and users, I need type

       shared_ptr

But this type make my code hard to develop and also read.

And what's wrong with just shared_ptr<B>? Why do you need the additional level of indirection?