I am new to stringstream. I just copied this code from submission.

Can anyone please explain me, what is happening here? Thanks in advance :)

vector<int> parseInts(string str) {
stringstream ss(str);   //??
vector<int> result;
char ch;
int tmp;
while(ss >> tmp) {      //??
    result.push_back(tmp);
    ss >> ch;           //??
}
return result;