template <class T, class P>
typename std::enable_if<!(isAssContainer<T>::value), bool>::type
MergeAssociative(T a, P b) {
    std::cout << "0" << std::endl;
    return false;
};

template <class T, class P>
typename std::enable_if<isAssContainer<T>::value, bool>::type
MergeAssociative(T a, P b) {
    std::cout << "1" << std::endl;
    return true;
};