使用可变参数验证std：：函数是否符合'kind‘层次结构

#include <type_traits>

template<typename T>
bool validateHierarchy()
{
    return true;
}

template<typename T, typename U, typename... Args>
bool validateHierarchy()
{
    if (!std::is_base_of<U, T>::value)
        return false;
    return validateHierarchy<U, Args...>();
}

template<typename... Args>
bool validateFunctionHierarchy()
{
    return validateHierarchy<Args...>();
}

// 示例使用
class Base {};
class Derived : public Base {};

int main()
{
    bool isValid = validateFunctionHierarchy<Derived, Derived, Base>();
    if (isValid)
        std::cout << "Function hierarchy is valid." << std::endl;
    else
        std::cout << "Function hierarchy is not valid." << std::endl;

    return 0;
}