template<class T> class CList : public std::list<T>
    {
        public:

            template<class Pred> bool Contain(Pred p)
            {
                return std::find_if(begin(), end(), p) != end();
            }


            bool Contain(const T & v)
            {
                return std::find(begin(), end(), v) != end();
            }
    }

CList<int>  a;
a.Contain([](auto i){ return i == 5; }); //ok
a.Contain(5);     //term does not evaluate to a function taking 1 arguments (compiling source file History.cpp)
        // bool CList<int>::Contain<int>(Pred)' being compiled ??????

    template<class T> class CList : public std::list<T>
    {
        public:

            template<class Pred> bool Contain(Pred p)
            {
                return std::find_if(begin(), end(), p) != end();
            }


            bool Contain(const T & v)
            {
                return std::find(begin(), end(), v) != end();
            }
    }

CList<int>  a;
a.Contain([](auto i){ return i == 5; }); //ok
a.Contain(5);     //term does not evaluate to a function taking 1 arguments
        // bool CList<int>::Contain<int>(Pred)' being compiled ??????