Testing.cpp: In function ‘std::string replace_str(std::string, std::string, std::string)’:
Testing.cpp:23:10: error: no match for ‘operator=’ (operand types are ‘__gnu_cxx::__normal_iterator<char*, std::basic_string<char> >’ and ‘void’)
     sbeg = s.insert(sbeg, newVal.cbegin(), newVal.cend());