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std::map<int, int> m; std::map<int, int>::const_iterator GetIterator() { return m.begin(); } const int &GetReference() { return m[0]; } int main() { m[0] = 9999; std::map<int, int>::const_iterator it = GetIterator(); std::cout << it->second << std::endl; const int& i = GetReference(); std::cout << i << std::endl; return 0; }
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