implement property size()

src/OpenVolumeMesh/Core/BaseProperty.hh

@@ -88,6 +88,8 @@ public:
 
     virtual const std::string typeNameWrapper() const = 0;
 
+    virtual size_t size() const = 0;
+
 protected:
 
     virtual void delete_multiple_entries(const std::vector<bool>& _tags) = 0;

src/OpenVolumeMesh/Core/OpenVolumeMeshProperty.hh

@@ -88,6 +88,9 @@ public:
 	virtual void resize(size_t _n) {
                 data_.resize(_n, def_);
 	}
+	virtual size_t size() const {
+		return data_.size();
+	}
 	virtual void clear() {
 		data_.clear();
 		vector_type().swap(data_);

src/OpenVolumeMesh/Core/PropertyPtr.hh

@@ -91,6 +91,7 @@ public:
 
     const_iterator begin() const { return ptr::shared_ptr<PropT>::get()->begin(); }
     iterator begin() { return ptr::shared_ptr<PropT>::get()->begin(); }
+    size_t size() const { return ptr::shared_ptr<PropT>::get()->size(); }
 
     const_iterator end() const { return ptr::shared_ptr<PropT>::get()->end(); }
     iterator end() { return ptr::shared_ptr<PropT>::get()->end(); }