Changes in / [235:b46d2787e9c2:239:7b7e3f20bcec] in lemon

Location:

lemon

Files:

• lgf_writer.h (modified) (1 diff)
• list_graph.h (modified) (1 diff)
• smart_graph.h (modified) (1 diff)

lemon/lgf_writer.h

@@ -935 +935 @@
     bool local_os;
 
-    Graph& _graph;
+    const Graph& _graph;
 
     std::string _nodes_caption;

lemon/list_graph.h

@@ -843 +843 @@
 
     public:
-      operator Edge() const { return edgeFromId(id / 2); }
+      operator Edge() const { 
+        return id != -1 ? edgeFromId(id / 2) : INVALID; 
+      }
 
       Arc() {}

lemon/smart_graph.h

@@ -466 +466 @@
 
     public:
-      operator Edge() const { return edgeFromId(_id / 2); }
+      operator Edge() const { 
+        return _id != -1 ? edgeFromId(_id / 2) : INVALID; 
+      }
 
       Arc() {}