template<typename GR>
class lemon::OutDegMap< GR >
This map returns the out-degree of a node. Once it is constructed, the degrees are stored in a standard NodeMap
, so each query is done in constant time. On the other hand, the values are updated automatically whenever the digraph changes.
- Warning
- Besides
addNode()
and addArc()
, a digraph structure may provide alternative ways to modify the digraph. The correct behavior of OutDegMap is not guarantied if these additional features are used. For example, the functions changeSource(), changeTarget() and reverseArc() of ListDigraph will not update the degree values correctly.
- See Also
- InDegMap
Inherits ObserverBase< GR, GR::Arc >.