Re: [boost] [Gauge for interest] Surrogate template

On 27/02/2011 07:56, Alan sinde wrote:

Example Usage:

class boy { public: virtual void tell() = 0; };

class happy_boy : public boy { ... }; class study_boy : public boy { ... };

void say_hi(boy& the_boy) { the_boy.tell(); }

int main() { std::cout<< "Hello boost::surrogate!"<< std::endl; happy_boy Terry; study_boy Thomas;

std::vector<boost::surrogate<boy> > boy_list; boy_list.push_back(boost::surrogate<boy>(Terry)); boy_list.push_back(boost::surrogate<boy>(Thomas));

std::for_each(boy_list.begin(), boy_list.end(), say_hi);

std::cin.get(); }

How is that different from clone_ptr and other similar works?