difficulty accessing yaml node as an array

Question

I was trying to access a frame that has X and Y co-ordinates using yaml. Things were working fine when I had &frame_node instead of *frame_node, but for using the FindValue function I had to use *frame_node. However, frame_node[0], frame_node[1], etc., give me an error now. Could you please help me to solve this issue?

if (const YAML::Node *frame_node = config_node.FindValue("frame")) {
   //const YAML::Node &frame_node = config_node["frame"];
   std::cout << "Hello" << std::endl;
   hasCard = 1 ; 
   // X-coordinates.
   frame_node[0] >> x[0];
   frame_node[1] >> x[1];
   frame_node[2] >> x[2];
   frame_node[3] >> x[3];
   // Y-coordinates.
   frame_node[4] >> y[0];
   frame_node[5] >> y[1];
   frame_node[6] >> y[2];
   frame_node[7] >> y[3];
}

Jesse Beder · Accepted Answer · 2013-02-12 14:07:02Z

1

frame_node is a pointer, so frame_node[1] will give you pointer arithmetic. You want (*frame_node)[1].

answered Feb 12, 2013 at 14:07

Jesse Beder

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