unique_ptr usage

unique_ptr_usage.cpp

#include <iostream>
#include <vector>
#include <memory>
using namespace std;

class Base {
	public:
		Base(int x): flag(x) {}
		int flag;
		void say() { cout << "I'm " << flag << endl; }
};

typedef unique_ptr<Base> Unique;
typedef vector<Unique> UniqueList;

void LSay(UniqueList v) {
 	//for (auto g: v) {
	//	g->say();
	//}
}

void LSay2(UniqueList& v) {
 	//for (auto g: v) {
	//	g->say();
	//}
}

void LSay3(UniqueList& v) {
 	for (auto &g: v) {
		g->say();
	}
}

void USay(Unique u) {
	u->say();
	u->flag = 1;
	u->say();
}

void BSay(Base &b) {
	b.say();
	b.flag = 2;
	b.say();
}

int main() {
	
	Unique u(new Base(5));
	//USay(u);
	BSay(*u);
	u->say();
	UniqueList v;
	v.push_back(std::move(u));
	//LSay(v);
	//LSay2(v);
	LSay3(v);
	
	return 0;
}