Gliph\Graph\DirectedAdjacencyList::edges PHP Метод

    public function edges()
    {
        $oset = $this->getTraversableSplos($this->vertices);
        foreach ($oset as $tail) {
            $set = $this->getTraversableSplos($this->vertices[$tail]);
            foreach ($set as $head) {
                (yield array($tail, $head));
            }
            $this->walking->detach($set);
        }
        $this->walking->detach($oset);
    }

 public static function dump(DirectedAdjacencyList $graph)
 {
     $edges = [];
     foreach ($graph->edges() as $edge) {
         $edges[] = $edge[0]->getName() . ' ' . $edge[1]->getName();
     }
     return $edges;
 }