equal
  deleted
  inserted
  replaced
  
    
    
|    300       It e; |    300       It e; | 
|    301       getFirst(e, v); |    301       getFirst(e, v); | 
|    302       return e;  |    302       return e;  | 
|    303     } |    303     } | 
|    304  |    304  | 
|         |    305     bool valid(NodeIt n) const { return n.valid(); } | 
|    305     bool valid(EdgeIt e) const { return e.valid(); } |    306     bool valid(EdgeIt e) const { return e.valid(); } | 
|    306     bool valid(NodeIt n) const { return n.valid(); } |         | 
|    307      |    307      | 
|    308     template <typename It> It getNext(It it) const {  |    308     template <typename It> It getNext(It it) const {  | 
|    309       It tmp(it); return next(tmp); } |    309       It tmp(it); return next(tmp); } | 
|    310     template <typename It> It& next(It& it) const { return ++it; } |    310     template <typename It> It& next(It& it) const { return ++it; } | 
|    311     |    311     |