network: Add NodeContainer::Contains()

src/network/helper/node-container.cc

@@ -136,4 +136,17 @@ NodeContainer::GetGlobal (void)
   return c;
 }
 
+bool
+NodeContainer::Contains (uint32_t id) const
+{
+  for (uint32_t i = 0; i < m_nodes.size (); i++)
+    {
+      if (m_nodes[i]->GetId () == id)
+        {
+          return true;
+        }
+    }
+  return false;
+}
+
 } // namespace ns3

src/network/helper/node-container.h

@@ -288,6 +288,14 @@ public:
    */
   static NodeContainer GetGlobal (void);
 
+  /**
+   * \brief Return true if container contains a Node with index id
+   *
+   * \return whether the NodeContainer contains a node with index id
+   * \param id Node Id
+   */
+  bool Contains (uint32_t id) const;
+
 private:
   std::vector<Ptr<Node> > m_nodes; //!< Nodes smart pointers
 };