How to parse json from a string (boost)?

Question

JSON

I have a perfectly working example of parsing a json file, but the question is, how can I parse a json string without loading it from a file, but, let's say, taking it from std::string?

std::ifstream ifs("config.json");
boost::property_tree::ptree pt;
boost::property_tree::read_json(ifs, pt);
string s( pt.get<string>("responseData.id") );
cout << s << endl;

Answer 1

Use std::istringstream instead of std :: ifstream