playerToRating = new HashMap(); } public function getRating(Player $player): Rating { return $this->playerToRating->getValue($player); } public function setRating(Player $player, Rating $rating): HashMap { return $this->playerToRating->setValue($player, $rating); } /** * @return Player[] */ public function getAllPlayers(): array { return $this->playerToRating->getAllKeys(); } /** * @return Rating[] */ public function getAllRatings(): array { return $this->playerToRating->getAllValues(); } public function count(): int { return $this->playerToRating->count(); } }