equal
  deleted
  inserted
  replaced
  
    
    
    47       }  | 
    47       }  | 
    48       return len;  | 
    48       return len;  | 
    49     }  | 
    49     }  | 
    50   | 
    50   | 
    51     bool empty() const { | 
    51     bool empty() const { | 
    52       return predMap[target] != INVALID;  | 
    52       return predMap[target] == INVALID;  | 
    53     }  | 
    53     }  | 
    54   | 
    54   | 
    55     class RevArcIt { | 
    55     class RevArcIt { | 
    56     public:  | 
    56     public:  | 
    57       RevArcIt() {} | 
    57       RevArcIt() {} | 
   121       }  | 
   121       }  | 
   122       return len;  | 
   122       return len;  | 
   123     }  | 
   123     }  | 
   124   | 
   124   | 
   125     bool empty() const { | 
   125     bool empty() const { | 
   126       return source != target;  | 
   126       return predMatrixMap(source, target) == INVALID;  | 
   127     }  | 
   127     }  | 
   128   | 
   128   | 
   129     class RevArcIt { | 
   129     class RevArcIt { | 
   130     public:  | 
   130     public:  | 
   131       RevArcIt() {} | 
   131       RevArcIt() {} |