C++ Split

Last Update: 2014/10/09 16:35+08
Type: Note


用 stringstream by 特定字元切割 ex: ':'

  std::ifstream infile("file.txt");
  if (!infile.is_open()) 
   return;
  
  std::string line;
  while (std::getline(infile, line)) {
   std::stringstream ss(line);
   std::string key, val;
   std::getline(ss, key, ':');
   std::getline(ss, val, ':');

用 istringstream by token (空白) 切割

  while (std::getline(infile, line)) {
   std::string key, val;

   istringstream iss(line);
   std::vector<std::string> tokens;
   copy(std::istream_iterator<std::string>(iss),
     std::istream_iterator<std::string>(),
     back_inserter<vector<std::string> >(tokens));
   if (tokens.size() != 2)
    continue;
   key = tokens[0];
   val = tokens[1];