title: Boost c++ and property map - getting an array into a vector
body: <p>How do I get an array into a vector from stl from using boos property map decoded from json</p>
  
  <pre><code>               hash = {'time_series':[1.0,1.0])
  
  
                  ptree pt2;
          std::istringstream is (content); read_json (is, pt2);
          std::vector&lt;double&gt; time_series = pt2.get("time_series");
  
  ../src/rtbTimeSeries.cpp:172:62: error: no matching function for call to ‘boost::property_tree::basic_ptree&lt;std::basic_string&lt;char&gt;, std::basic_string&lt;char&gt; &gt;::get(const char [12])’
  </code></pre>