Added comment clarifying shared_ptr usage in case python derived objects need to be passed to c++

App/inc/FitSuiteObserverFactory.h

@@ -25,6 +25,7 @@
 class FitSuiteObserverFactory
 {
 public:
+    // These shared pointers will be used as observer_t
     typedef boost::shared_ptr<FitSuitePrintObserver> observer_print_t;
     typedef boost::shared_ptr<FitSuiteDrawObserver> observer_draw_t;
     typedef boost::shared_ptr<FitSuiteWriteTreeObserver> observer_tree_t;

Core/Algorithms/inc/ISampleBuilder.h

@@ -36,6 +36,7 @@ public:
 protected:
 };
 
+// Shared pointer is used when passing these objects from python to c++
 typedef boost::shared_ptr<class ISampleBuilder > SampleBuilder_t;
 
 #endif /* ISAMPLEBUILDER_H_ */

Core/Tools/inc/IObserver.h

@@ -44,6 +44,7 @@ public:
 
 class BA_CORE_API_ IObservable {
 public:
+    // Shared pointer is used when passing these objects from python to c++
     typedef boost::shared_ptr<IObserver > observer_t;
     typedef std::list<observer_t > observerlist_t;