But when I try that here, VS2019 throws up this compiler error:-
error C2039: 'default_list_hook': is not a member of 'animal'
Can anyone explain what I'm doing wrong??
John
It's difficult to see what's wrong without a full compilable example but the following snippet works perfectly for me in Visual 2019: #include <boost/intrusive/list.hpp> #include <string> #include <iostream> using namespace std; class animal { public: animal (string n, int l) : name{move(n)}, legs{l} {} string name; int legs; boost::intrusive::list_member_hook<> _animal_hook; }; typedef boost::intrusive::member_hook<animal, boost::intrusive::list_member_hook<>, &animal::_animal_hook> AnimalHookOption; typedef boost::intrusive::list<animal, AnimalHookOption> Animals; void print_list (const Animals& elem) { for (const Animals::value_type& a : elem) cout << "A " << a.name << " has " << a.legs << " legs" << '\n'; } int main() { animal a1{"dog", 4}; animal a2{"spider", 6}; animal a3{"budgie", 2}; Animals animals; animals.push_back(a1); animals.push_back(a2); animals.push_back(a3); print_list (animals); return 0; }