lemon/core.h
changeset 887 ca4059d63236
parent 877 141f9c0db4a3
child 893 d395358592df
equal deleted inserted replaced
18:0800646476d7 19:22d185f7fe69
   442         to.build(from, nodeRefMap, edgeRefMap);
   442         to.build(from, nodeRefMap, edgeRefMap);
   443       }
   443       }
   444     };
   444     };
   445 
   445 
   446   }
   446   }
       
   447 
       
   448   /// Check whether a graph is undirected.
       
   449   ///
       
   450   /// This function returns \c true if the given graph is undirected.
       
   451 #ifdef DOXYGEN
       
   452   template <typename GR>
       
   453   bool undirected(const GR& g) { return false; }
       
   454 #else
       
   455   template <typename GR>
       
   456   typename enable_if<UndirectedTagIndicator<GR>, bool>::type
       
   457   undirected(const GR&) {
       
   458     return true;
       
   459   }
       
   460   template <typename GR>
       
   461   typename disable_if<UndirectedTagIndicator<GR>, bool>::type
       
   462   undirected(const GR&) {
       
   463     return false;
       
   464   }
       
   465 #endif
   447 
   466 
   448   /// \brief Class to copy a digraph.
   467   /// \brief Class to copy a digraph.
   449   ///
   468   ///
   450   /// Class to copy a digraph to another digraph (duplicate a digraph). The
   469   /// Class to copy a digraph to another digraph (duplicate a digraph). The
   451   /// simplest way of using it is through the \c digraphCopy() function.
   470   /// simplest way of using it is through the \c digraphCopy() function.