How to detect duplicates in a vector of unordered_map?

Question

Given a vector of unordered_map, I would like to check if the vector contains any duplicated values. Two unordered_maps a

Answer 1

you can something similar to the following :

typedef unordered_map int_map;

struct my_map_comparator
{
    bool operator()(const int_map& a, const int_map& b) 
    { 
      a_hash = compute_hash_for_a(all keys of a)
      b_hash = compute_hash_for_b(all keys of b)

      return a_hash == b_hash; 
    }
};

std::unordered_set, my_map_comparator> map_list();