有可能摆脱类变量吗？

Question

我从that question

开始

我的目标是尝试一种不寻常但有趣的方法来调用块。我来到那个代码：

class Chips
  def self.configure player_class, player_id_method, player_api_method
    player_class.send :define_method, player_api_method do
      Chips::Player.new(self.send player_id_method)
    end
  end

  def self.fix_game game_id
    @@game_results = {game_id: game_id, players: []}
    yield
    puts @@game_results.inspect
  end

  class Player
    def initialize player_id
      @player_id= player_id
    end

    def gain chips
      Chips.send :fix_player, @player_id, chips.abs
    end

    def lose chips
      Chips.send :fix_player, @player_id, -chips.abs
    end
  end

  def self.fix_player player_id, chips
    @@game_results[:players]<< {player_id: player_id, chips: chips}
  end

  private_class_method :fix_player
end

class User
  attr_reader :email
  def initialize email
    @email = email
  end
end

Chips.configure User, :email, :chips
p1= User.new 'david@gmail.com'
p2= User.new 'simon@gmail.com'

# p1.chips and p2.chips should have access to the value 
# currently accessible by @@game_results reference
Chips.fix_game 3333 do
  p1.chips.gain 300
  p2.chips.lose 300
end

...输出{:game_id=>3333, :players=>[{:player_id=>"david@gmail.com", :chips=>300}, {:player_id=>"simon@gmail.com", :chips=>-300}]}

我想避免使用类变量。

PS

问题创建表格不允许我提交这个问题，直到我添加更多的单词，这实际上是对强大的门卫的祈祷。我给你带来了更多的字节，TMD。我遵守。