public static IEnumerable <TVertex> GetNeighbours <TVertex, TEdge>(
this IBidirectionalGraph <TVertex, TEdge> graph, TVertex vertex, EdgeDirection edgeDirection)
where TEdge : IEdge <TVertex>
{
return(edgeDirection == EdgeDirection.In
? graph.GetInNeighbours(vertex)
: graph.GetOutNeighbours(vertex));
}
public static IEnumerable <TVertex> GetAllNeighbours <TVertex, TEdge>(
this IBidirectionalGraph <TVertex, TEdge> graph, TVertex vertex)
where TEdge : IEdge <TVertex>
{
return(graph.GetInNeighbours(vertex).Union(graph.GetOutNeighbours(vertex)));
}