Dumplie\Customer\Infrastructure\InMemory\InMemoryOrders::exists PHP 메소드

public exists ( OrderId $id ) : boolean
$id	Dumplie\Customer\Domain\OrderId
리턴	boolean

    public function exists(OrderId $id) : bool
    {
        return array_key_exists((string) $id, $this->orders);
    }

InMemoryOrders