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I am using C++ as the app backbone and Objective-C for the GUI, that's fine. But when it comes to mixing those code together in Objective-C++ (.mm file), I have got a few question: 1. Can I mix STL containers with Objective-C or Cocos2D objects? E.g. In Objective-C header, can I do the following? #include <vector> #include <boost\shared_ptr.hpp> @interface MyClass : NSObject { std::vector<boost::shared_ptr<CCSprite> > m_spriteList; } And then in the .mm file, I want to do CCSprite* newSprite = [/* cocos2d stuff here... */]; m_spriteList.push_back(newSprite); Is the above code valid? It certainly is in C++, but I am not sure when mixing C++ and Objective-C and Cocos2D. 2. Memory management using C++ smart pointer object in Objective-C? When I try to use the C++ code in Objective-C, I want to declare a C++ object as a member variable in the Objective-C header file. Say I have a C++ class declared in the test.h header: Test{ }; In Objective-C header file, I want to do #include "test.h" #incude <boost/scoped_ptr.hpp> #include <vector> @interface MyClass : NSObject { Test* m_testObjectPtr; // (1) boost::scoped_ptr<Test> m_testOjbSmartPtr; // (2) } In the above code, is (2) okay? Can I use smart pointers in Objective-C just like in C++ code? And can I assume the Test class destructor will be called when the MyClass object is destroyed? Or if (2) is not okay in Objective-C++, is (1) okay? Would I need to manually call delete m_testObjectPtr in dealloc ?

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