@@ -843,5 +843,7 @@
public:
operator Edge() const { return edgeFromId(id / 2); }
operator Edge() const {
return id != -1 ? edgeFromId(id / 2) : INVALID;
}
Arc() {}
@@ -466,5 +466,7 @@
operator Edge() const { return edgeFromId(_id / 2); }
return _id != -1 ? edgeFromId(_id / 2) : INVALID;