language: C++11 (gcc-4.7.2)
date: 530 days 19 hours ago
link:
visibility: private 
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#include <iostream>
#include <vector>
 
class Base {
public:
    int integer;
 
    Base() : integer(0) {}
    Base(int i) : integer(i) {}
};
 
class Double: public Base {
public:
    Double(int i) { integer = i * 2; }
};
 
class Triple: public Base {
public:
    Triple(int i) { integer = i * 3; }
};
 
class Multiply: public Base {
public:
    Multiply(int i, int amount) { integer = i * amount; }
};
 
template<typename T, typename... Args>
Base* createBaseObject(Args... as) {
    return new T(as...);
};
 
int main() {
    std::vector<Base*> objects;
 
    objects.push_back(createBaseObject<Double>(2));
    objects.push_back(createBaseObject<Triple>(2));
    objects.push_back(createBaseObject<Multiply>(3,4));
 
    for(int i = 0; i < objects.size(); ++i) {
        std::cout << objects[i]->integer << std::endl;
    }
 
    std::cin.get();
    return 0;
}