std::vectorstd::string split(const std::string& str, char delim = ' ') {     std::string temp;         std::istringstream is(str);         std::vectorstd::string split;         while(std::getline(is, temp, delim))     {         split.push_back(temp);     }         return split; } std::vectorstd::string split1(const std::string& str, char delim = ' ') {     std::vectorstd::string split;         auto last = str.begin();         auto itr = std::find(str.begin(), str.end(), delim);         for ( ; itr != str.end(); itr = std::find(itr, str.end(), delim))     {         split.push_back({last, itr});                 last = ++itr;     }         split.push_back({last, itr});         return split; } std::vectorstd::string split2(const std::string& str, char delim = ' ') {     std::vectorstd::string split;         std::size_t i = str.find(delim), last = 0;         for ( ; i != std::string::npos; i = str.find(delim, i) )     {         split.push_back(str.substr(last, i - last));                 last = ++i;     }         split.push_back(str.substr(last, i - last));         return split; } int main(int argc, char * argv []) {     std::string str("string to split");

    std::cout << benchmark(std::bind(split, str, ' '), 1000000).count() << std::endl;         std::cout << benchmark(std::bind(split1, str, ' '), 1000000).count() << std::endl;         std::cout << benchmark(std::bind(split2, str, ' '), 1000000).count() << std::endl;    

}

Output:

0.00246193 0.00206184

0.0016398