C++ split: find version

C++ split: find version

vector<string> split(const string &str, const string &delim){
  vector<string> res;
  size_t current = 0, found, delimlen = delim.size();
  while((found = str.find(delim, current)) != string::npos){
    res.push_back(string(str, current, found - current));
    current = found + delimlen;
  }
  res.push_back(string(str, current, str.size() - current));
  return res;
}