Compilare: user.cpp: In member function ‘std::pair<int, std::vector<int> > RollingHash::GetMatchingIndexes(const string&, int)’: user.cpp:36:28: warning: variable ‘pattern_code’ set but not used [-Wunused-but-set-variable] pair<int, int> pattern_code = {match[0], match[1]}; ^ user.cpp:38:17: warning: unused variable ‘current_index’ [-Wunused-variable] int current_index = 0; ^