ruby - 如何访问此变量？

Question

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

我有上面的代码......可以说我然后写。

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

当我在类范围之外时，我想访问 saves 变量，getsaves 我该怎么做？：

puts saves variable that is inside getsaves

Answer 1

正如您所写的那样，不仅无法从类范围之外访问变量，而且在方法结束时saves它超出了范围。getsaves

你应该这样做：

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

现在您可以简单地使用j.saves来访问@saves变量。