#include <functional>
#include <vector>
#include <iostream>
 
class A
{
public:
	A() = delete;
	A(int i)
		: my_i(i), whoAmI([this]()->void { std::cout << "I am class A with i=" << this->my_i << std::endl; })
	{
	}
	A(const A&) = delete;
	A(A&& a) 
	{ 
		this->my_i = a.my_i; 
		this->whoAmI = [this]()->void { std::cout << "I am class A with i=" << this->my_i << std::endl; }; 
	};
	int my_i;
	std::function<void()> whoAmI;
};
 
int main()
{
	std::vector<A> vec;
	std::cout << "Initialization:" << std::endl;
	for (int i = 0; i<3; ++i)
	{
		vec.push_back(A(i));
		vec.back().whoAmI();
	}
	std::cout << "Retrieval:" << std::endl;
	for (int i = 0; i<3; ++i)
		vec.at(i).whoAmI();
}

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