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for finding and fixing issues
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<?php declare(strict_types=1);
namespace Stratadox\Pathfinder\Graph;
final class Node implements Vertex
{
private $label;
private $edges;
private function __construct(string $label, Edges $edges)
$this->label = $label;
$this->edges = $edges;
}
public static function labeled(
string $label,
Edges $edges = null
): Vertex {
return new self($label, $edges ?: Roads::none());
public function label(): string
return $this->label;
public function edges(): Edges
return $this->edges;
public function hasNegativeEdges(): bool
foreach ($this->edges() as $edge) {
if ($edge->cost() < 0) {
return true;
return false;
Stratadox /
Pathfinder
