iterate and retrieve nested object in JSON using rapidjson

Question

I am parsing a JSON structure which is similar as follows

{
    \"item1\" : \"value1\"
    \"item2\" : \"value2\"
    // ...
    \"itemn\" : {
          


        

Answer 1

First, let me provide credit to MiloYip at this link

Second-- here's what I did for my project:

rapidjson::Document document;
// document holds a json document retrieved from a http GET request
// I did not include all of that in this example.  I am only showing
// the part of iterating through a nested object and retrieving members.

std::vector symbols;
// holds the values I retrieve from the json document

if (document.Parse<0>( symbol.c_str() ).HasParseError() )
    Log() << "ERROR: encountered a JSON parsing error" << std::endl;
else {
    // Get the nested object that contains the elements I want.
    // In my case, the nested object in my json document was results
    // and the values I was after were identified as "t"
    rapidjson::Value& results = document["results"];
    assert(results.IsArray());
    for (rapidjson::SizeType i = 0; i < results.Size(); i++) {
        // Store the value of the element in a vector.
        symbols.emplace_back(results[i]["t"].GetString());
}                            

I think this is a pretty clean/efficient approach.