如何訪問此變量？

Question

class Player 
    def getsaves 
    print "Saves: " 
    saves = gets 
    end 
    def initialize(saves, era, holds, strikeouts, whip) 
    end 
end 

我有上面的代碼...讓我說，然後寫。

j = Player.new(30, 30, 30, 30, 30) 

我想訪問保存變量getsaves 當我在類範圍之外，我該怎麼辦？：這個

puts saves variable that is inside getsaves 

Answer 1

當你寫它，不僅是saves變量從類範圍外不可訪問，它在getsaves方法的末尾超出範圍。

你應該做這樣的事情，而不是：

class Player 
    def getsaves 
    print "Saves: " 
    @saves = gets # use an instance variable to store the value 
    end 
    attr_reader :saves # allow external access to the @saves variable 
    def initialize(saves, era, holds, strikeouts, whip) 
    end 
end 

現在，你可以簡單地使用j.saves訪問@saves變量。