Ruby語法錯誤，意外的輸入結束，期待keyword_end

Question

我正在嘗試創建紙牌遊戲的基礎知識。在創建/測試我的初始套件時，當我運行我的Ruby代碼時，我不斷收到以下錯誤消息。

gofish.rb:30: syntax error, unexpected '\n', expecting :: or '[' or '.' 
gofish.rb:73: syntax error, unexpected end-of-input, expecting keyword_end 
deck.add_cards 

我擡頭可能的解決方案，似乎我無法找到我的思念年底。它可能是別的嗎？我對ruby很陌生。

class Deck 

    def initialize 
     @ranks = %w(2 3 4 5 6 7 8 9 10 Jack Queen King Ace) 
     @suits = %w(Clubs Spades Hearts Diamonds) 
     @cards = [] 

     @ranks.each do |rank| 
      @suits.each do |suit| 
       @cards << Card.new(rank, suit) 
      end 
     end 
    end 

    def shuffle 
     @cards.shuffle 
    end 

    def deal 
     @cards.shift 
    end 

    def empty? 
     @cards.empty? 
    end 

    def add_cards(*cards) 
     *cards.each do |card| 
      @cards << card 
     end #line 30 
    end 

    def to_s 
     output = "" 

     @cards.each do |card| 
      output = output + card.to_s + "\n" 
     end 

     return output 
    end 
end 

class Hand 

    def initialize 
    end 

    def search() 
    end 
end 

class Card 

    attr_reader :rank, :suit 

    def initialize(rank, suit) 
     @rank = rank 
     @suit = suit 
    end 

    def to_s 
     "#{@rank} of #{@suit}" 
    end 
end 

deck = Deck.new 

puts deck.to_s 
deck.shuffle 
puts deck.to_s 
deck.deal 
deck.add_cards #line 73 

Answer 1

你不應該使用圖示操作的方法中，只要保持它的參數：

def add_cards(*cards) 
    cards.each do |card| 
     @cards << card 
    end 
end