$instance
$instance :
Edge's Tail
Identifies where an edge originates from. Differently from head nodes, the TailNode class implements the Observer pattern as a Subject to observe their edge for deletion.
set(\Pho\Lib\Graph\NodeInterface $node) : void
Sets the node instance that this
\Pho\Lib\Graph\NodeInterface | $node |
node() : \Pho\Lib\Graph\NodeInterface
Retrieves the node represented
In light of Proxy pattern, adjacent nodes represent an actual node, and pass any incoming method calls to that object. This function returns the actual node.
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{@inheritdoc}
Differently from all other entities in the graph, when destroyed, tail nodes notify their outgoing edges.
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