testing insert or replace

#include <iostream>
#include <map>
#include <unordered_map>
#include <string>

struct MyObj
{
    MyObj(int i) : i(i) { std::cout << "constructed " << i << std::endl; }
    MyObj(const MyObj& other) : i(other.i) { std::cout << "copyconstructed " << i << std::endl; }
    MyObj(MyObj&& other) : i(std::forward<int>(other.i)) { std::cout << "moved " << i << std::endl; }
    int i;

    MyObj& operator=(const MyObj& other)
    {
        this->i = other.i;
        std::cout << "copied1 " << i << std::endl;
        return *this;
    }

    MyObj& operator=(MyObj&& other)
    {
        this->i = other.i;
        std::cout << "copied2 " << i << std::endl;
        return *this;
    }
};

struct KeyHash {
 std::size_t operator()(const MyObj& k) const
 {
     return std::hash<int>()(k.i);
 }
};

struct KeyEqual {
 bool operator()(const MyObj& lhs, const MyObj& rhs) const
 {
    return lhs.i == rhs.i;
 }
};

void InsertOrReplace(std::unordered_map<MyObj, MyObj, KeyHash, KeyEqual>& mymap, MyObj&& key, const MyObj& value)
{
    // try insert new element to mymap
    auto result = mymap.emplace(std::make_pair(std::forward<MyObj&&>(key), value));
    if (!result.second)
        result.first->second = value;
}

int main()
{
    std::unordered_map<MyObj, MyObj, KeyHash, KeyEqual> mymap;
    InsertOrReplace(mymap, MyObj(1), MyObj(2));
    std::cout << std::endl;
    InsertOrReplace(mymap, MyObj(1), MyObj(2));
    return 0;
}