Merge branch '256-new-data-structure-for-storing-stateblocks' of...

Merge branch '256-new-data-structure-for-storing-stateblocks' of ssh://gitlab.iri.upc.edu:2202/mobile_robotics/wolf_projects/wolf_lib/wolf into 256-new-data-structure-for-storing-stateblocks

include/core/capture/capture_base.h

@@ -81,7 +81,7 @@ class CaptureBase : public NodeBase, public HasStateBlocks, public std::enable_s
         const FactorBasePtrList& getConstrainedByList() const;
 
         // State blocks
-        std::string getStructure() const;
+        const std::string& getStructure() const;
         StateBlockPtr getStateBlock(const std::string& _key) const;
         StateBlockPtr getStateBlock(const char _key) const { return getStateBlock(std::string(1, _key)); }
         StateBlockPtr getSensorP() const;

src/capture/capture_base.cpp

@@ -135,7 +135,7 @@ void CaptureBase::removeConstrainedBy(FactorBasePtr _fac_ptr)
     constrained_by_list_.remove(_fac_ptr);
 }
 
-std::string CaptureBase::getStructure() const
+const std::string& CaptureBase::getStructure() const
 {
     if (getSensor())
         return getSensor()->getStructure();