Solution: Dynamic Tuple Creation
Gain insight into the methodology employed to solve the dynamic tuple creation challenge.
We'll cover the following...
Performing dynamic operations on tuples
Let’s execute the provided solution for the dynamic tuple creation challenge and observe the code output. Subsequently, we’ll dissect the code step by step.
Press + to interact
template<typename... Types>class dynamicTuple {public:template<typename... Args>dynamicTuple(Args&&... args) : elements(std::forward<Args>(args)...) {}template<std::size_t Index>decltype(auto) get_value() {return std::get<Index>(elements);}template<typename... Args>auto append(Args&&... args) {return dynamicTuple<Types..., decltype(std::declval<Args>())...>(std::get<Types>(elements)..., std::forward<Args>(args)...);}// Member function to apply a given function to each elementtemplate<typename F>void apply_function(F&& func) {(func(std::get<Types>(elements)), ...);}private:std::tuple<Types...> elements;template<typename... Ts>friend void access_private(dynamicTuple<Ts...>& container);};// Nonmember function to access private member of dynamicTupletemplate<typename... Types>void access_private(dynamicTuple<Types...>& container) {std::cout << "Printing private member: ";container.apply_function([](auto&& value) { std::cout << value << " "; });std::cout << std::endl;}int main() {dynamicTuple<int, double, std::string> container(42, 3.14, "Hello");std::cout << "get_value at index 0: " << container.get_value<0>() << std::endl;auto appendedContainer = container.append("World", 101);std::cout << "Container: " << std::endl;access_private(container);std::cout << "Appended Container: " << std::endl;access_private(appendedContainer);return 0;}
Explanation
Let’s go over how each code block works in the widget above.
Lines 1–29: ...