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POTrying to store objects in a vector
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  1. POTrying to store objects in a vector
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    copied!<p>I'm quite new to C++ and I am trying to store objects inside a std::vector like this:</p> <p>Event.h:</p> <pre><code>//event.h class Event { public: Event(); Event(std::string name); ~Event(); void addVisitor(Visitor visitor); private: std::vector&lt;Visitor&gt; m_visitors; }; </code></pre> <p>Event.cpp:</p> <pre><code>//event.cpp Event::Event() : m_name("Unnamed Event") { } Event::Event(std::string name) : m_name(name) { } void Event::addVisitor(Visitor visitor) { this-&gt;m_visitors.push_back(visitor); } void Event::listVisitors() { std::vector&lt;Visitor&gt;::iterator it; for(it = this-&gt;m_visitors.begin();it != this-&gt;m_visitors.end(); ++it) { std::cout &lt;&lt; it-&gt;getName() &lt;&lt; std::endl; } } </code></pre> <p>Visitor.h:</p> <pre><code>//visitor.h class Visitor { public: Visitor(); Visitor(std::string name); ~Visitor(); std::string getName() const; void listVisitors(); private: std::string m_name; }; </code></pre> <p>Visitor.cpp:</p> <pre><code>//visitor.cpp Visitor::Visitor() : m_name("John Doe") { } Visitor::Visitor(std::string name) : m_name(name) { } std::string Visitor::getName() const { return m_name; } </code></pre> <p>main.cpp:</p> <pre><code>//main.cpp int main() { Event *e1 = new Event("Whatever"); Visitor *v1 = new Visitor("Dummy1"); Visitor *v2 = new Visitor("Dummy2"); e1-&gt;addVisitor(*v1); e1-&gt;addVisitor(*v2); } </code></pre> <p>If I do it like this I would have to add a copy constructor which would make a deep copy so the object gets copied properly into the vector. I'm looking for a way around it by only storing pointers to the objects in a vector. I already tried it with <code>std::vector&lt;std::unique_ptr&lt;Visitor&gt; &gt; m_visitors</code>, but then I got some errors when calling addVisitor in main.cpp. Of course I changed the declaration of the class members accordingly. How would an appropriate declaration of the members and the member function look like to make it work?</p>
 

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