A [std::regex_token_iterator](<http://en.cppreference.com/w/cpp/regex/regex_token_iterator>) provides a tremendous tool for extracting elements of a Comma Separated Value file. Aside from the advantages of iteration, this iterator is also able to capture escaped commas where other methods struggle:
const auto input = "please split,this,csv, ,line,\\\\,\\n"s;
const regex re{ "((?:[^\\\\\\\\,]|\\\\\\\\.)+)(?:,|$)" };
const vector<string> m_vecFields{ sregex_token_iterator(cbegin(input), cend(input), re, 1), sregex_token_iterator() };
cout << input << endl;
copy(cbegin(m_vecFields), cend(m_vecFields), ostream_iterator<string>(cout, "\\n"));
A notable gotcha with regex iterators is, that the regex argument must be an L-value. An R-value will not work.