QtDesignPatterns/commandpattern/broker.h

#include <vector>
#include "interface.h"

class Broker
{
public:
    void addOrder(Order *order)
    {
        vector.push_back(order);
    }
    void executeAllOrder()
    {
        for(auto it : vector)
        {
            it->execute();
        }
        vector.clear();
    }

private:
    std::vector<Order *> vector;
};