std::shared_ptr deep copy object

Question

Can\'t find much on that for C++11 but only on boost.

Consider the following class:

class State
{
   std::shared_ptr _graph;

 public:

         


        

Answer 1

If you want to make a copy of the Graph object when you make a copy of the object, you can always define your copy constructor and assignment operator to do just that:

State::State(const State& rhs) : _graph(std::make_shared(*rhs._graph)) {
   // Handled by initializer list
}
State::State(State&& rhs) : _graph(std::move(rhs._graph)) {
   // Handled by initializer list
}
State& State::operator= (State rhs) {
    std::swap(*this, rhs);
    return *this;
}

Hope this helps!