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POSet of shared_ptr and set function count
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11071315
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CreationDate
2012-06-17T12:32:02.320
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2012-06-24T18:16:20.453
LastEditDate
2012-06-24T18:16:20.453
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205233
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1455380
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1
Score
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ViewCount
4625
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text
Body
I have a set of shared pointers. I want to make a function that checks if a shared pointer exists in it. I assumed I need to use set.count to get it. But I get 0 all the time... even though the shared pointer exists in there. So my question is: how does count compare shared pointers? Please bare in mind I am new to C++, I can provide with code, but there's a lot of it. EDIT 2: The function that checks the building and adds a car. <pre><code>void Garage::addCar(Car& n, Building& m){ shared_ptr<Building> mm(new Building(m)); if (this->Buildings.count(mm) == 0){ cout << m.name << " doesn't exist in " << this->name << "." << endl; return; } shared_ptr<Car> s(new Car(n)); m.addCar(s); Cars.insert(s); } </code></pre> Function that creates Buildings <pre><code> Building Garage::create Building(string name){ shared_ptr< Building> f_ptr(new Building(name)); Buildings.insert(f_ptr); return (*f_ptr); } </code></pre> Class garage <pre><code>class Garage { public: Garage(string name); ~Garage(); void admitCar(Car& n, Building& m); void dismissCar(Car& n, Building& m); void employEmployee(Employee& n, Building& m); void dismissEmployee(Employee& n, Building& m); Building createBuilding(string name); void deleteBuilding(Building&); private: int nextIndex; string name; set<shared_ptr<Building> > Buildings; set<shared_ptr<Employee> > Employees; set<shared_ptr<Car> > Car; } </code></pre> Whenever I want to add a car to a building, it says that that building doesnt exist in that garage... SOLUTION(my own): <pre><code>bool Garage::hasBuilding(shared_ptr<Building> f){ return (this->Buildings.count(f) != 0); } </code></pre> This is the function I created. It works. I tried Jonathan Wakely and LiKao ways but they were a bit too complicated for me and I had problems which again I couldn't myself solve. Thank You for the help :)
Tags
<c++><count><set><shared-ptr>
Title
Set of shared_ptr and set function count
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