typedef boost::intrusive::list<
Action, boost::intrusive::member_hook<Action, boost::intrusive::list_member_hook<>, &Action::modified_set_hook_>>
ModifiedSet;
typedef boost::intrusive::list<
Action, boost::intrusive::member_hook<Action, boost::intrusive::list_member_hook<>, &Action::modified_set_hook_>>
ModifiedSet;