c++ - How to define a template class for a linked list node with pointer as template type -

how define node template linked list? want keep pointer type template parameter can change unique_ptr or shared_ptr depends on available.

template<typename t, typename nodeptr> struct node{     t data;     nodeptr parent = nullptr; }; 

the question how initiate class nodeptr shared_ptr < node <t ,what?> > type?

the "simplest" solution can think of variadic template template parameter:

template<class t,template<class ...> class ptr_t> struct node {     t data;     ptr_t<node> parent{nullptr}; }; 

this works both unique_ptr , shared_ptr this:

node<int,std::shared_ptr> roots; node<int,std::unique_ptr> rootu; 

as suggested yourself, you'd have introduce type alias, if want use raw pointers:

template<class t> using raw_ptr = t*;