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POAdding elements to a vector inside a c++ class not being stored
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  1. POAdding elements to a vector inside a c++ class not being stored
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    copied!<p><b>Edit: My debugger was lying to me. This is all irrelevant</b></p> <p>Howdy all,</p> <p>I had a peek at <a href="https://stackoverflow.com/questions/637438/adding-element-to-vector">Adding element to vector</a>, but it's not helpful for my case.</p> <p>I'm trying to add an element (custom class LatLng) to another object (Cluster) from a third object (ClusterManager). </p> <p>When I pass my LatLng to Cluster (last line of ClusterManager.cpp), and jump into Cluster::addLocation, at the end of the function execution gdb says my new LatLng has been added to Cluster, but the moment I jump back into the scope of the highest class, ClusterManager, the new LatLng added to the vector 'locStore' is not present in either runtime or debug. </p> <p>Any ideas?</p> <p>DJS.</p> <p>DE: Xcode 3.2 (Targeted to Debug 10.5) OS: OSX 10.6 Compiler: GCC 4.2 Arch: x86_64</p> <p><i>ClusterManager.cpp</i> (where it's all being called from):</p> <pre><code>void ClusterManager::assignPointsToNearestCluster() { //Iterate through the points. for (int i = 0; i &lt; locationStore.size(); i++) { double closestClusterDistance = 100.1; // Make sure to chuck the shits if we don't find a cluster. int closestCluster = -1; int numClusters = clusterStore.size(); // Iterate through the clusters. for (int j = 0; j &lt; numClusters; j++) { double thisDistance = locationStore[i].getDistanceToPoint( *(clusterStore[j].getCentroid()) ); // If there's a closer cluster, make note of it. if (thisDistance &lt; closestClusterDistance) { closestClusterDistance = thisDistance; closestCluster = j; } } // Remember the penultiment closest cluster. this-&gt;clusterStore[closestCluster].addLocation( this-&gt;locationStore[i] ); } } </code></pre> <p><i>ClusterManager.h</i></p> <pre><code>#include "Cluster.h" #include "LatLng.h" #include &lt;vector&gt; class ClusterManager{ private: std::vector&lt;Cluster&gt; clusterStore; std::vector&lt;LatLng&gt; locationStore; public: ClusterManager(); void assignPointsToNearestCluster(); void addLocation(int,double,double); }; </code></pre> <p><i>Cluster.h:</i></p> <pre><code>#include &lt;vector&gt; #include &lt;string&gt; #include "LatLng.h" class Cluster { private: std::vector&lt;LatLng&gt; locStore; LatLng newCentroid; bool lockCentroid; int clusterSize; int clusterID; public: Cluster(int,LatLng&amp;); void addLocation(LatLng&amp;); LatLng* getCentroid(); }; </code></pre> <p><i>Cluster.cpp</i></p> <pre><code>Cluster::Cluster(int newId, LatLng &amp;startPoint) { this-&gt;clusterID = newId; this-&gt;newCentroid = startPoint; }; void Cluster::addLocation(LatLng &amp;newLocation) { (this-&gt;locStore).push_back( newLocation ); }; LatLng* Cluster::getCentroid() { return &amp;newCentroid; }; </code></pre>
 

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