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STL_Helper.h

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#ifndef STL_HELPER_H_
#define STL_HELPER_H_

#include <list>

using namespace std;

namespace Util {
        enum ListOpResult {
                LIST_END,
                LIST_MIDDLE
        };

        template <class T> T min(const T& a, const T& b);

        template <class T> ListOpResult safeIteratorRemove(list<T>& l, list<T>::iterator& i);

        template <class T> ListOpResult safeIteratorSwap(list<T>& src, list<T>& dst, list<T>::iterator& i);

        template <class container>      void freeDynamicContainer(container& c);
        
        template <class T> T min(const T& a, const T& b) {
                if (a < b) return a;
                return b;
        }

        template <class T> ListOpResult safeIteratorRemove(list<T>& l, list<T>::iterator& i) {
                list<T>::iterator cpy = i;
                i++;
                l.erase(cpy);
                if (i == l.end()) return LIST_END;
                return LIST_MIDDLE;
        }
        
        template <class T> ListOpResult safeIteratorSwap(list<T>& src, list<T>& dst, list<T>::iterator& i) {
                dst.push_back(*i);
                return (safeIteratorRemove<T>(src, i));         
        }

        template <class container> void freeDynamicContainer(container& c) {
                for (typename container::iterator i = c.begin(); i != c.end(); i++) {
                        delete (*i);
                }
                c.clear();
        }

};

#endif // ifndef STL_HELPER_H_

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