gistfile1.txt

#include <iostream>
#include <string>
#include <list>
#include <unordered_map>

class KeyHasher {
public:
    std::size_t operator()(const int& k) const {
        return k%2;
    }
};


int main () {
    std::unordered_map<int,int, KeyHasher> mymap;
    std::list<int> lints = {66, 81, 33, 21, 99, 96, 60, 17, 28, 22};
    mymap.reserve(15);
    for(auto v : lints)
        mymap.insert({v,v});

    unsigned n = mymap.bucket_count();

    std::cout << "mymap has " << n << " buckets.\n";

    for (unsigned i=0; i<n; ++i) {
        std::cout << "bucket #" << i << " contains: ";
        for (auto it = mymap.begin(i); it!=mymap.end(i); ++it)
            std::cout << "[" << it->first << ":" << it->second << "] ";
        std::cout << "\n";
    }

    return 0;
}